diff --git a/README.md b/README.md
index f70b8eb..ee3b6d4 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@ If you don't have YunoHost, please consult [the guide](https://yunohost.org/#/in
 * Combine with the [VPN Client app](https://github.com/labriqueinternet/vpnclient_ynh) to obtain a VPN-protected WiFi
 
 
-**Shipped version:** 2.0~ynh4
+**Shipped version:** 2.1~ynh1
 
 ## Screenshots
 
diff --git a/README_fr.md b/README_fr.md
index 88c5f61..d19c85b 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -20,7 +20,7 @@ Si vous n’avez pas YunoHost, regardez [ici](https://yunohost.org/#/install) po
 * À combiner avec l'[app VPN Client](https://github.com/labriqueinternet/vpnclient_ynh) pour obtenir un accès internet aumatiquement protégé par votre VPN
 
 
-**Version incluse :** 2.0~ynh4
+**Version incluse :** 2.1~ynh1
 
 ## Captures d’écran
 
diff --git a/check_process b/check_process
index aafd852..950622f 100644
--- a/check_process
+++ b/check_process
@@ -13,7 +13,7 @@
 		upgrade=1
 		upgrade=1	from_commit=539a1f26c30ba850455c63746d50ce3d8f33b119
 		backup_restore=1
-		multi_instance=0
+		multi_instance=1
 		change_url=0
 ;;; Upgrade options
 	; commit=539a1f26c30ba850455c63746d50ce3d8f33b119
diff --git a/conf/dnsmasq.conf.tpl b/conf/dnsmasq.conf.tpl
new file mode 100644
index 0000000..7af2560
--- /dev/null
+++ b/conf/dnsmasq.conf.tpl
@@ -0,0 +1,4 @@
+# Wifi Hotspot app for YunoHost 
+
+# Enable DNS resolution on wifi interface
+interface=__WIFI_DEVICE__
diff --git a/conf/hostapd.base.conf b/conf/hostapd.base.conf
deleted file mode 100644
index 8ea3d7d..0000000
--- a/conf/hostapd.base.conf
+++ /dev/null
@@ -1,8 +0,0 @@
-interface=__WIFI_DEVICE__
-hw_mode=g
-__N_COMMENT__ieee80211n=1
-__N_COMMENT__wmm_enabled=1
-macaddr_acl=0
-auth_algs=1
-ignore_broadcast_ssid=0
-channel=__WIFI_CHANNEL__
diff --git a/conf/hostapd.accesspoint.conf b/conf/hostapd.conf.tpl
similarity index 63%
rename from conf/hostapd.accesspoint.conf
rename to conf/hostapd.conf.tpl
index a726b1e..64e59eb 100644
--- a/conf/hostapd.accesspoint.conf
+++ b/conf/hostapd.conf.tpl
@@ -1,4 +1,9 @@
-__BSS_COMMENT__bss=__WIFI_INTERFACE__
+interface=__WIFI_DEVICE__
+hw_mode=g
+macaddr_acl=0
+auth_algs=1
+ignore_broadcast_ssid=0
+channel=__WIFI_CHANNEL__
 ssid=__WIFI_SSID__
 __SEC_COMMENT__wpa=2
 __SEC_COMMENT__wpa_passphrase=__WIFI_PASSPHRASE__
diff --git a/conf/openvpn_90-hotspot b/conf/openvpn_90-hotspot
new file mode 100644
index 0000000..ce09c25
--- /dev/null
+++ b/conf/openvpn_90-hotspot
@@ -0,0 +1,3 @@
+#!/bin/bash
+
+systemctl restart __SERVICE_NAME__
\ No newline at end of file
diff --git a/conf/systemd.service b/conf/systemd.service
index 6268e69..1537aca 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -6,8 +6,8 @@ After=network.target
 [Service]
 Type=oneshot
 User=root
-ExecStart=/usr/local/bin/ynh-hotspot start
-ExecStop=/usr/local/bin/ynh-hotspot stop
+ExecStart=/usr/local/bin/__SERVICE_NAME__ start
+ExecStop=/usr/local/bin/__SERVICE_NAME__ stop
 RemainAfterExit=yes
 
 [Install]
diff --git a/conf/systemd_hostapd.service b/conf/systemd_hostapd.service
new file mode 100644
index 0000000..14ad3eb
--- /dev/null
+++ b/conf/systemd_hostapd.service
@@ -0,0 +1,12 @@
+[Unit]
+Description=LSB: Advanced IEEE 802.11 management daemon
+After=remote-fs.target
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+Restart=no
+TimeoutSec=5min
+ExecStart=/usr/sbin/hostapd /etc/hostapd/__APP__/hostapd.conf
+ExecReload=/bin/kill -HEP $MAINPID
diff --git a/conf/ynh-hotspot b/conf/ynh-hotspot
index 546d283..a98d557 100644
--- a/conf/ynh-hotspot
+++ b/conf/ynh-hotspot
@@ -17,88 +17,95 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+source /usr/share/yunohost/helpers
+
 # Functions
 ## State functions
 
-has_vpnclient_app() {
-    [ -e /tmp/.ynh-vpnclient-started ]
-}
-
 has_ip6delegatedprefix() {
-    local i=${1}
-
-    [[ -n "${ip6_net[${i}]}" ]] && [[ "${ip6_net[${i}]}" != "none" ]]
+    [[ -n "${ip6_net}" ]] && [[ "${ip6_net}" != "none" ]]
 }
 
 ip6addrfromdelegatedprefix() {
-    local i=${1}
-
-    echo "${ip6_net[${i}]}${i}001"
+    echo "${ip6_net}1"
 }
 
 is_nat_set() {
     local gateway_interface=${1}
-
     iptables -w -nvt nat -L POSTROUTING | grep MASQUERADE | grep -q "${gateway_interface}"
 }
 
 is_ip4nataddr_set() {
-    local i=${1}
-    local dev=$(devfromid "${i}")
-
-    ip address show dev "${dev}" 2>/dev/null | grep -q "${ip4_nat_prefix[${i}]}.1/24"
+    ip address show dev "${wifi_device}" 2>/dev/null | grep -q "${ip4_nat_prefix}.1/24"
 }
 
 is_ip6addr_set() {
-    local i=${1}
-    local dev=$(devfromid "${i}")
-
-    ip address show dev "${dev}" 2>/dev/null | grep -q "$(ip6addrfromdelegatedprefix $i)/64"
+    ip address show dev "${wifi_device}" 2>/dev/null | grep -q "$(ip6addrfromdelegatedprefix)/64"
 }
 
 is_ip6firewall_set() {
-    local i=${1}
-    local dev=$(devfromid "${i}")
-
-    ip6tables -w -nvL FORWARD | grep DROP | grep -q "${dev}"
+    ip6tables -w -nvL FORWARD | grep DROP | grep -q "${wifi_device}"
 }
 
 is_forwarding_set() {
     local ip6=$(sysctl net.ipv6.conf.all.forwarding | awk '{ print $NF; }')
     local ip4=$(sysctl net.ipv4.conf.all.forwarding | awk '{ print $NF; }')
 
-    [ "${ip6}" -eq 1 ] && [ "${ip4}" -eq 1 ]
+    [[ "${ip6}" -eq 1 ]] && [[ "${ip4}" -eq 1 ]]
 }
 
 is_dhcpd6_running() {
-    local i=${1}
-
-    ps aux | grep "dhcpdv6-ssid${i}" | grep -qv grep
+    [[ -e "/run/dnsmasq/dnsmasq-dhcpdv6-$app.pid" ]] && ps -p $(cat "/run/dnsmasq/dnsmasq-dhcpdv6-$app.pid") > /dev/null
 }
 
 is_dhcpd4_running() {
-    local i=${1}
-
-    ps aux | grep "dhcpdv4-ssid${i}" | grep -qv grep
+    [[ -e "/run/dnsmasq/dnsmasq-dhcpdv4-$app.pid" ]] && ps -p $(cat "/run/dnsmasq/dnsmasq-dhcpdv4-$app.pid") > /dev/null
 }
 
 is_hostapd_running() {
-    systemctl is-active hostapd &>/dev/null
+    systemctl is-active "hostapd@${app}" &>/dev/null
+}
+
+is_other_hostapd_running() {
+    other_hostapd_services=$(systemctl list-units --state=running hostapd@*.service | grep -v "^hostapd@$app.service")
+
+    [[ -n "${other_hostapd_service}" ]]
 }
 
 is_running() {
-    for i in $(seq 0 $((${multissid} - 1))); do
-        (has_ip6delegatedprefix ${i} && is_ip6addr_set ${i} \
-            && ([ "${ip6_firewall[${i}]}" -eq 1 ] && is_ip6firewall_set ${i} || [ "${ip6_firewall[${i}]}" -eq 0 ]) \
-            && is_dhcpd6_running ${i} || ! has_ip6delegatedprefix ${i}) \
-            && is_ip4nataddr_set ${i} && is_dhcpd4_running ${i}
-
-        if [ ! $? -eq 0 ]; then
+    if has_ip6delegatedprefix; then
+        if ! is_ip6addr_set; then
             return 1
         fi
-    done
+        if [[ "${ip6_firewall}" -eq 1 ]] && ! is_ip6firewall_set; then
+            return 1
+        fi
+        if ! is_dhcpd6_running; then
+            return 1
+        fi
+    fi
 
-    is_hostapd_running && is_forwarding_set && ([ -z "${new_gateway_interface}" ] || is_nat_set "${new_gateway_interface}")
+    if ! is_ip4nataddr_set; then
+        return 1
+    fi
+
+    if ! is_dhcpd4_running; then
+        return 1
+    fi
+
+    if ! is_hostapd_running; then
+        return 1
+    fi
+
+    if ! is_forwarding_set; then
+        return 1
+    fi
+
+    if [[ -n ${new_gateway_interface} ]] && ! is_nat_set "${new_gateway_interface}"; then
+        return 1
+    fi
+
+    return 0
 }
 
 ## Setters
@@ -110,33 +117,26 @@ set_nat() {
 }
 
 set_ipaddr() {
-    local i=${1}
-    local dev=$(devfromid "${i}")
-
-    if ! is_ip4nataddr_set ${i}; then
-        echo "hotspot${i}: Set IPv4 NAT address"
-        ip address add "${ip4_nat_prefix[${i}]}.1/24" dev "${dev}"
+    if ! is_ip4nataddr_set; then
+        echo "hotspot ${wifi_device}: Set IPv4 NAT address"
+        ip address add "${ip4_nat_prefix}.1/24" dev "${wifi_device}"
     fi
 
-    if has_ip6delegatedprefix ${i} && ! is_ip6addr_set ${i}; then
-        echo "hotspot${i}: Set IPv6 address"
-        ip address delete "$(ip6addrfromdelegatedprefix $i)/64" dev tun0 &>/dev/null
-        ip address add "$(ip6addrfromdelegatedprefix $i)/64" dev "${dev}"
+    if has_ip6delegatedprefix && ! is_ip6addr_set; then
+        echo "hotspot ${wifi_device}: Set IPv6 address"
+        ip address delete "$(ip6addrfromdelegatedprefix)/64" dev tun0 &>/dev/null
+        ip address add "$(ip6addrfromdelegatedprefix)/64" dev "${wifi_device}"
     fi
 }
 
 set_ipfirewall() {
-    local i=${1}
-    local dev=$(devfromid "${i}")
-
     # Set ipv6 firewalling
-    if has_ip6delegatedprefix ${i} && [ "${ip6_firewall[${i}]}" -eq 1 ] && ! is_ip6firewall_set ${i}; then
-        echo "hotspot${i}: Set IPv6 firewalling"
-        ip6tables -w -A FORWARD -i "${dev}" -j ACCEPT
-        ip6tables -w -A FORWARD -o "${dev}" -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
-        ip6tables -w -A FORWARD -o "${dev}" -j DROP
+    if has_ip6delegatedprefix && [[ "${ip6_firewall}" -eq 1 ]] && ! is_ip6firewall_set; then
+        echo "hotspot ${wifi_device}: Set IPv6 firewalling"
+        ip6tables -w -A FORWARD -i "${wifi_device}" -j ACCEPT
+        ip6tables -w -A FORWARD -o "${wifi_device}" -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
+        ip6tables -w -A FORWARD -o "${wifi_device}" -j DROP
     fi
-
 }
 
 set_forwarding() {
@@ -145,62 +145,22 @@ set_forwarding() {
 }
 
 start_dhcpd() {
-    local i=${1}
-    local dev=$(devfromid "${i}")
-
     # Run DHCPv4 server
-    if ! is_dhcpd4_running ${i}; then
-        echo "hotspot${i}: Start the DHCPv4 server (dnsmasq)"
-
-        cp /etc/dnsmasq.dhcpd/dhcpdv4{.conf.tpl,-ssid${i}.conf}
-
-        sed "s|__WIFI_DEVICE__|${dev}|g" -i /etc/dnsmasq.dhcpd/dhcpdv4-ssid${i}.conf
-        sed "s|__IP4_DNS__|${ip4_dns[${i}]}|g" -i /etc/dnsmasq.dhcpd/dhcpdv4-ssid${i}.conf
-        sed "s|__IP4_NAT_PREFIX__|${ip4_nat_prefix[${i}]}|g" -i /etc/dnsmasq.dhcpd/dhcpdv4-ssid${i}.conf
-
-        dnsmasq -C /etc/dnsmasq.dhcpd/dhcpdv4-ssid${i}.conf -p0
+    if ! is_dhcpd4_running; then
+        echo "hotspot ${wifi_device}: Start the DHCPv4 server (dnsmasq)"
+        dnsmasq -C /etc/dnsmasq.$app/dhcpdv4.conf -p0 -x /run/dnsmasq/dnsmasq-dhcpv4-$app.pid
     fi
 
     # Run DHCPv6 server
-    if has_ip6delegatedprefix ${i} && ! is_dhcpd6_running ${i}; then
-        echo "hotspot${i}: Start the NDP and DHCPv6 server (dnsmasq)"
-
-        cp /etc/dnsmasq.dhcpd/dhcpdv6{.conf.tpl,-ssid${i}.conf}
-
-        sed "s|__WIFI_DEVICE__|${dev}|g" -i /etc/dnsmasq.dhcpd/dhcpdv6-ssid${i}.conf
-        sed "s|__IP6_DNS__|${ip6_dns[${i}]}|g" -i /etc/dnsmasq.dhcpd/dhcpdv6-ssid${i}.conf
-        sed "s|__IP6_NET__|${ip6_net[${i}]}|g" -i /etc/dnsmasq.dhcpd/dhcpdv6-ssid${i}.conf
-
-        dnsmasq -C /etc/dnsmasq.dhcpd/dhcpdv6-ssid${i}.conf -p0
+    if has_ip6delegatedprefix && ! is_dhcpd6_running; then
+        echo "hotspot ${wifi_device}: Start the NDP and DHCPv6 server (dnsmasq)"
+        dnsmasq -C /etc/dnsmasq.$app/dhcpdv6.conf -p0 -x /run/dnsmasq/dnsmasq-dhcpv6-$app.pid
     fi
 }
 
 configure_hostapd() {
-
     local ethaddr=$(ip link show dev "${wifi_device}" | grep link/ether | awk -F: '{ printf "02:%s:%s:%s:%s:00", $2, $3, $4, $5 }')
     ip link set addr "${ethaddr}" dev "${wifi_device}"
-
-    cp /etc/hostapd/hostapd.base.conf /etc/hostapd/hostapd.conf
-    sed "s|__WIFI_DEVICE__|${wifi_device}|g" -i /etc/hostapd/hostapd.conf
-    sed "s|__WIFI_CHANNEL__|${wifi_channel}|g" -i /etc/hostapd/hostapd.conf
-    sed "s|__N_COMMENT__||g" -i /etc/hostapd/hostapd.conf
-
-    for i in $(seq 0 $((${multissid} - 1))); do
-
-        [ "${wifi_secure[${i}]}" -eq 1 ] && local sec_comment="" || local sec_comment="#"
-        [ "${i}" -eq 0 ] && local bss_comment="#" || local bss_comment=""
-
-        cp /etc/hostapd/hostapd.accesspoint.conf /etc/hostapd/hostapd.conf.tmp
-
-        sed "s|__WIFI_INTERFACE__|hotspot${i}|g" -i /etc/hostapd/hostapd.conf.tmp
-        sed "s|__WIFI_SSID__|${wifi_ssid[${i}]}|g" -i /etc/hostapd/hostapd.conf.tmp
-        sed "s|__WIFI_PASSPHRASE__|${wifi_passphrase[${i}]}|g" -i /etc/hostapd/hostapd.conf.tmp
-        sed "s|__SEC_COMMENT__|${sec_comment}|g" -i /etc/hostapd/hostapd.conf.tmp
-        sed "s|__BSS_COMMENT__|${bss_comment}|g" -i /etc/hostapd/hostapd.conf.tmp
-
-        cat /etc/hostapd/hostapd.conf.tmp >>/etc/hostapd/hostapd.conf
-        rm /etc/hostapd/hostapd.conf.tmp
-    done
 }
 
 ## Unsetters
@@ -212,29 +172,23 @@ unset_nat() {
 }
 
 unset_ipaddr() {
-    local i=${1}
-    local dev=$(devfromid "${i}")
-
-    if is_ip4nataddr_set ${i}; then
-        echo "hotspot${i}: Unset IPv4 NAT address"
-        ip address delete "${ip4_nat_prefix[${i}]}.1/24" dev "${dev}"
+    if is_ip4nataddr_set; then
+        echo "hotspot ${wifi_device}: Unset IPv4 NAT address"
+        ip address delete "${ip4_nat_prefix}.1/24" dev "${wifi_device}"
     fi
 
-    if has_ip6delegatedprefix ${i} && is_ip6addr_set ${i}; then
-        echo "hotspot${i}: Unset IPv6 address"
-        ip address delete "$(ip6addrfromdelegatedprefix $i)/64" dev "${dev}"
+    if has_ip6delegatedprefix && is_ip6addr_set; then
+        echo "hotspot ${wifi_device}: Unset IPv6 address"
+        ip address delete "$(ip6addrfromdelegatedprefix)/64" dev "${wifi_device}"
     fi
 }
 
 unset_ipfirewall() {
-    local i=${1}
-    local dev=$(devfromid "${i}")
-
-    if has_ip6delegatedprefix ${i} && [ "${ip6_firewall[${i}]}" -eq 1 ] && is_ip6firewall_set ${i}; then
-        echo "hotspot${i}: Unset IPv6 firewalling"
-        ip6tables -w -D FORWARD -i "${dev}" -j ACCEPT
-        ip6tables -w -D FORWARD -o "${dev}" -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
-        ip6tables -w -D FORWARD -o "${dev}" -j DROP
+    if has_ip6delegatedprefix && [[ "${ip6_firewall}" -eq 1 ]] && is_ip6firewall_set; then
+        echo "hotspot ${wifi_device}: Unset IPv6 firewalling"
+        ip6tables -w -D FORWARD -i "${wifi_device}" -j ACCEPT
+        ip6tables -w -D FORWARD -o "${wifi_device}" -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
+        ip6tables -w -D FORWARD -o "${wifi_device}" -j DROP
     fi
 }
 
@@ -244,77 +198,21 @@ unset_forwarding() {
 }
 
 stop_dhcpd() {
-    local i=${1}
-
-    if is_dhcpd6_running ${i}; then
-        echo "hotspot${i}: Stop the NDP and DHCPv6 server (dnsmasq)"
-        kill $(ps aux | grep 'dhcpdv6-ssid' | grep -v grep | awk '{ print $2 }')
-        rm -f /etc/dnsmasq.d/dhcpdv6-ssid*.conf
+    if is_dhcpd6_running; then
+        echo "hotspot ${wifi_device}: Stop the NDP and DHCPv6 server (dnsmasq)"
+        kill $(cat /run/dnsmasq/dnsmasq-dhcpdv6-$app.pid)
+        rm -f /run/dnsmasq/dnsmasq-dhcpdv6-$app.pid
     fi
 
-    if is_dhcpd4_running ${i}; then
-        echo "hotspot${i}: Stop the DHCPv4 server (dnsmasq)"
-        kill $(ps aux | grep 'dhcpdv4-ssid' | grep -v grep | awk '{ print $2 }')
-        rm -f /etc/dnsmasq.d/dhcpdv4-ssid*.conf
+    if is_dhcpd4_running; then
+        echo "hotspot ${wifi_device}: Stop the DHCPv4 server (dnsmasq)"
+        kill $(cat /run/dnsmasq/dnsmasq-dhcpdv4-$app.pid)
+        rm -f /run/dnsmasq/dnsmasq-dhcpdv4-$app.pid
     fi
 }
 
-stop_dhcpd4() {
-    :
-}
-
 stop_hostapd() {
-    systemctl stop hostapd
-}
-
-## Tools
-
-ynh_setting_get() {
-
-    APP="$1" KEY="$2" python3 - <<EOF
-import os, yaml, sys
-app = os.environ['APP']
-key = os.environ['KEY']
-setting_file = "/etc/yunohost/apps/%s/settings.yml" % app
-assert os.path.exists(setting_file), "Setting file %s does not exists ?" % setting_file
-with open(setting_file) as f:
-    settings = yaml.safe_load(f)
-    if key in settings:
-        print(settings[key])
-EOF
-
-}
-
-ynh_setting_set() {
-
-    # This is a partial copypasta of the official ynh_app_setting internal helper
-    # In particular, we do this instead of relying on 'yunohost app setting' for
-    # performance reasons (it takes a few second to run every yunohost commands)
-    # and to remove the need for the infamous '--need-lock' option/issue.
-
-    APP="$1" KEY="$2" VALUE="${3:-}" python3 - <<EOF
-import os, yaml, sys
-app = os.environ['APP']
-key, value = os.environ['KEY'], os.environ.get('VALUE', None)
-setting_file = "/etc/yunohost/apps/%s/settings.yml" % app
-assert os.path.exists(setting_file), "Setting file %s does not exists ?" % setting_file
-with open(setting_file) as f:
-    settings = yaml.load(f)
-settings[key] = value
-with open(setting_file, "w") as f:
-    yaml.safe_dump(settings, f, default_flow_style=False)
-EOF
-
-}
-
-devfromid() {
-    local i=${1}
-
-    if [ "${i}" -eq 0 ]; then
-        echo "${wifi_device}"
-    else
-        echo "hotspot${i}"
-    fi
+    systemctl stop "hostapd@${app}"
 }
 
 if [ "$1" != restart ]; then
@@ -323,42 +221,23 @@ if [ "$1" != restart ]; then
 
     echo -n "Retrieving Yunohost settings... "
 
-    service_enabled=$(systemctl is-enabled ynh-hotspot)
-    wifi_device=$(ynh_setting_get hotspot wifi_device)
-    wifi_channel=$(ynh_setting_get hotspot wifi_channel)
-    multissid=$(ynh_setting_get hotspot multissid)
+    app=__APP__
+    service_enabled=$(ynh_app_setting_get --app=$app --key=service_enabled)
+    wifi_device=$(ynh_app_setting_get --app=$app --key=wifi_device)
+    wifi_channel=$(ynh_app_setting_get --app=$app --key=wifi_channel)
 
-    IFS='|' read -a wifi_ssid <<<"$(ynh_setting_get hotspot wifi_ssid)"
-    IFS='|' read -a wifi_secure <<<"$(ynh_setting_get hotspot wifi_secure)"
-    IFS='|' read -a wifi_passphrase <<<"$(ynh_setting_get hotspot wifi_passphrase)"
-    IFS='|' read -a ip6_firewall <<<"$(ynh_setting_get hotspot ip6_firewall)"
-    IFS='|' read -a ip6_net <<<"$(ynh_setting_get hotspot ip6_net)"
-    IFS='|' read -a dns <<<"$(ynh_setting_get hotspot dns)"
-    IFS='|' read -a ip4_nat_prefix <<<"$(ynh_setting_get hotspot ip4_nat_prefix)"
-    for i in $(seq 0 $((${multissid} - 1))); do
-        ip6_dns[${i}]=""
-        ip4_dns[${i}]=""
-        for ip in $(echo "${dns[${i}]}" | tr ',' ' '); do
-            if [[ "$ip" == *":"* ]]; then
-                ip6_dns[${i}]+="[$ip],"
-            else
-                ip4_dns[${i}]+="$ip,"
-            fi
-        done
-        # Remove trailing ,
-        ip6_dns[${i}]="${ip6_dns[${i}]%%,}"
-        ip4_dns[${i}]="${ip4_dns[${i}]%%,}"
-    done
+    wifi_ssid=$(ynh_app_setting_get --app=$app --key=wifi_ssid)
+    wifi_secure=$(ynh_app_setting_get --app=$app --key=wifi_secure)
+    wifi_passphrase=$(ynh_app_setting_get --app=$app --key=wifi_passphrase)
+    ip6_firewall=$(ynh_app_setting_get --app=$app --key=ip6_firewall)
+    ip6_dns=$(ynh_app_setting_get --app=$app --key=ip6_dns)
+    ip6_net=$(ynh_app_setting_get --app=$app --key=ip6_net)
+    ip4_dns=$(ynh_app_setting_get --app=$app --key=ip4_dns)
+    ip4_nat_prefix=$(ynh_app_setting_get --app=$app --key=ip4_nat_prefix)
 
-    old_gateway_interface=$(ynh_setting_get hotspot gateway_interface)
+    old_gateway_interface=$(ynh_app_setting_get --app=$app --key=gateway_interface)
     new_gateway_interface=$(ip route get 1.2.3.4 | awk '{ print $5; }')
 
-    # Switch the NAT interface if there is a VPN
-    ip link show dev tun0 &>/dev/null
-    if [ "$?" -eq 0 ]; then
-        new_gateway_interface=tun0
-    fi
-
     echo "OK"
 fi
 
@@ -369,27 +248,26 @@ start)
     if is_running; then
         echo "Already started"
         exit 0
-    elif [ "${service_enabled}" != "enabled" ]; then
-        echo "Not starting because hotspod service is disabled"
+    elif [[ "${service_enabled}" -eq 0 ]]; then
+        echo "Not starting because hotspot service is disabled"
         exit 1
     fi
 
-    if [ -z "${wifi_device}" ]; then
+    if [[ -z "${wifi_device}" ]]; then
         echo "[FAIL] No wifi device selected. Make sure your wifi antenna is plugged-in / available and select it in the Hotspot admin"
         exit 1
     fi
 
     echo "[hotspot] Starting..."
-    touch /tmp/.ynh-hotspot-started
+    touch /tmp/.${service_name}-started
 
     # Check old state of the ipv4 NAT settings
-    if [ -n "${old_gateway_interface}" ] && [ "${new_gateway_interface}" != "${old_gateway_interface}" ] && is_nat_set "${old_gateway_interface}"; then
-
+    if [[ -n "${old_gateway_interface}" ]] && [[ "${new_gateway_interface}" != "${old_gateway_interface}" ]] && is_nat_set "${old_gateway_interface}"; then
         unset_nat "${old_gateway_interface}"
     fi
 
     # Set ipv4 NAT
-    if [ -n "${new_gateway_interface}" ] && ! is_nat_set "${new_gateway_interface}"; then
+    if [[ -n "${new_gateway_interface}" ]] && ! is_nat_set "${new_gateway_interface}"; then
         echo "Set NAT"
         set_nat "${new_gateway_interface}"
     fi
@@ -404,66 +282,43 @@ start)
         configure_hostapd
 
         echo "Starting hostapd..."
-        if ! systemctl start hostapd; then
+        if ! systemctl start "hostapd@${app}"; then
             journalctl -u hostapd -n 100 --no-hostname --no-pager
             exit 1
         fi
 
         sleep 1
-
-        # On single SSID, the hotspot interface will be wlan0 (or similar)
-        # in multissid, we additionally want to make sure that at least hotspot1 started
-        if [ "${multissid}" -gt 1 ]; then
-            i=0
-            while ! ip link show dev "hotspot1" &>/dev/null; do
-                sleep 1
-                if [ ${i} -gt 20 ]; then
-                    echo "Failed to see hotspot interface showing up in 'ip a'"
-                    stop_hostapd
-                    exit 1
-                fi
-                i=$(($i + 1))
-            done
-        fi
     fi
 
-    # For each registred ssid
-    for i in $(seq 0 $((${multissid} - 1))); do
-        set_ipaddr ${i}
-        set_ipfirewall ${i}
-        start_dhcpd ${i}
-    done
+    set_ipaddr
+    set_ipfirewall
+    start_dhcpd
 
     # Update dynamic settings
-    ynh_setting_set hotspot gateway_interface "${new_gateway_interface}"
+    ynh_app_setting_set hotspot gateway_interface "${new_gateway_interface}"
     ;;
 stop)
     echo "[hotspot] Stopping..."
-    rm -f /tmp/.ynh-hotspot-started
+    rm -f /tmp/.${service_name}-started
 
-    if [ -n "${old_gateway_interface}" ] && is_nat_set "${old_gateway_interface}"; then
-        echo "Unset NAT"
-        unset_nat "${old_gateway_interface}"
+    if ! is_other_hostapd_running; then
+        if [[ -n "${old_gateway_interface}" ]] && is_nat_set "${old_gateway_interface}"; then
+            echo "Unset NAT"
+            unset_nat "${old_gateway_interface}"
+        fi
+        
+        echo "Unset forwarding"
+        unset_forwarding
     fi
 
-    echo "Unset forwarding"
-    unset_forwarding
-
-    for i in $(seq 0 $((${multissid} - 1))); do
-        unset_ipaddr ${i}
-        unset_ipfirewall ${i}
-        stop_dhcpd ${i}
-    done
+    unset_ipaddr
+    unset_ipfirewall
+    stop_dhcpd
 
     if is_hostapd_running; then
         echo "Stop hostapd"
         stop_hostapd
     fi
-
-    # Fix configuration
-    if has_vpnclient_app; then
-        ynh-vpnclient start
-    fi
     ;;
 restart)
     $0 stop
@@ -472,12 +327,12 @@ restart)
 status)
     exitcode=0
 
-    if [ "${service_enabled}" != "enabled" ]; then
+    if [[ "${service_enabled}" -eq 0 ]]; then
         echo "[FAIL] Hotspot Service disabled"
         exit 1
     fi
 
-    if [ -z "${wifi_device}" ]; then
+    if [[ -z "${wifi_device}" ]]; then
         echo "[FAIL] No wifi device selected. Make sure your wifi antenna is plugged-in / available and select it in the Hotspot admin"
         exit 1
     fi
@@ -487,7 +342,7 @@ status)
     if is_nat_set "${new_gateway_interface}"; then
         echo "[ OK ] IPv4 NAT set"
     else
-        if [ -z "${new_gateway_interface}" ]; then
+        if [[ -z "${new_gateway_interface}" ]]; then
             echo "[INFO] No IPv4 NAT set (no internet interface)"
         else
             echo "[FAIL] No IPv4 NAT set"
@@ -509,53 +364,51 @@ status)
         exitcode=1
     fi
 
-    for i in $(seq 0 $((${multissid} - 1))); do
-        if has_ip6delegatedprefix ${i}; then
-            echo "[INFO] hotspot${i}: IPv6 delegated prefix found"
-            echo "[INFO] hotspot${i}: IPv6 address computed from the delegated prefix: $(ip6addrfromdelegatedprefix $i)"
+    if has_ip6delegatedprefix; then
+        echo "[INFO] hotspot ${wifi_device}: IPv6 delegated prefix found"
+        echo "[INFO] hotspot ${wifi_device}: IPv6 address computed from the delegated prefix: $(ip6addrfromdelegatedprefix)"
 
-            if is_ip6addr_set ${i}; then
-                echo "[ OK ] hotspot${i}: IPv6 address set"
-            else
-                echo "[FAIL] hotspot${i}: No IPv6 address set"
-                exitcode=1
-            fi
-
-            if is_ip6firewall_set ${i}; then
-                echo "[ OK ] hotspot${i}: IPv6 firewalling set"
-            else
-                if [ "${ip6_firewall[${i}]}" -eq 1 ]; then
-                    echo "[FAIL] hotspot${i}: No IPv6 firewalling set"
-                else
-                    echo "[INFO] hotspot${i}: No IPv6 firewalling set"
-                fi
-                exitcode=1
-            fi
-
-            if is_dhcpd6_running ${i}; then
-                echo "[ OK ] hotspot${i}: NDP and DHCPv6 server (dnsmasq) are running"
-            else
-                echo "[FAIL] hotspot${i}: NDP and DHCPv6 server (dnsmasq) are not running"
-                exitcode=1
-            fi
+        if is_ip6addr_set; then
+            echo "[ OK ] hotspot ${wifi_device}: IPv6 address set"
         else
-            echo "[INFO] hotspot${i}: No IPv6 delegated prefix found"
-        fi
-
-        if is_dhcpd4_running ${i}; then
-            echo "[ OK ] hotspot${i}: DHCPv4 server (dnsmasq) is running"
-        else
-            echo "[FAIL] hotspot${i}: DHCPv4 (dnsmasq) is not running"
+            echo "[FAIL] hotspot ${wifi_device}: No IPv6 address set"
             exitcode=1
         fi
 
-        if is_ip4nataddr_set ${i}; then
-            echo "[ OK ]  hotspot${i}: IPv4 NAT address set"
+        if is_ip6firewall_set; then
+            echo "[ OK ] hotspot ${wifi_device}: IPv6 firewalling set"
         else
-            echo "[FAIL] hotspot${i}: No IPv4 NAT address set"
+            if [[ "${ip6_firewall}" -eq 1 ]]; then
+                echo "[FAIL] hotspot ${wifi_device}: No IPv6 firewalling set"
+            else
+                echo "[INFO] hotspot ${wifi_device}: No IPv6 firewalling set"
+            fi
             exitcode=1
         fi
-    done
+
+        if is_dhcpd6_running; then
+            echo "[ OK ] hotspot ${wifi_device}: NDP and DHCPv6 server (dnsmasq) are running"
+        else
+            echo "[FAIL] hotspot ${wifi_device}: NDP and DHCPv6 server (dnsmasq) are not running"
+            exitcode=1
+        fi
+    else
+        echo "[INFO] hotspot ${wifi_device}: No IPv6 delegated prefix found"
+    fi
+
+    if is_dhcpd4_running; then
+        echo "[ OK ] hotspot ${wifi_device}: DHCPv4 server (dnsmasq) is running"
+    else
+        echo "[FAIL] hotspot ${zifi_device}: DHCPv4 (dnsmasq) is not running"
+        exitcode=1
+    fi
+
+    if is_ip4nataddr_set; then
+        echo "[ OK ]  hotspot ${wifi_device}: IPv4 NAT address set"
+    else
+        echo "[FAIL] hotspot ${wifi_device}: No IPv4 NAT address set"
+        exitcode=1
+    fi
 
     exit ${exitcode}
     ;;
diff --git a/config_panel.toml b/config_panel.toml
index 7b11364..ff286d0 100644
--- a/config_panel.toml
+++ b/config_panel.toml
@@ -19,7 +19,7 @@ name = "Configuration"
         visible = "no_antenna"
 
         [main.service.status]
-        ask = "The status of your VPN is unknown."
+        ask = "The status of your Hotspot is unknown."
         type = "alert"
         style = "info"
         visible = "! no_antenna"
@@ -52,194 +52,59 @@ name = "Configuration"
         visible = "! no_antenna"
         help = "Changing the channel may help with signal strength depending on neighbour WiFis"
 
-        [main.service.multissid]
-        ask = "Number of hotspots to broadcast"
-        type = "select"
-        choices.1 = "1"
-        choices.2 = "2"
-        choices.3 = "3"
-        visible = "! no_antenna"
-
-    [main.hotspot1]
-    name = "Hotspot 1"
+    [main.hotspot]
+    name = "Hotspot"
     optional = false
     visible = "! no_antenna"
 
-        [main.hotspot1.wifi_ssid__1]
+        [main.hotspot.wifi_ssid]
         ask = "Name (SSID)"
         type = "string"
-        bind = "array_settings()"
         pattern.regexp = '^[\w \-]{1,32}$'
         pattern.error = "SSID in this app are limited to letter, number space, dash and underscores."
 
-        [main.hotspot1.wifi_secure__1]
+        [main.hotspot.wifi_secure]
         ask = "Secure"
         type = "boolean"
-        bind = "array_settings()"
 
-        [main.hotspot1.wifi_passphrase__1]
+        [main.hotspot.wifi_passphrase]
         ask = "Password (WPA2)"
         type = "string"
-        bind = "array_settings()"
         redact = true
         optional = true
-        visible = "wifi_secure__1"
+        visible = "wifi_secure"
         pattern.regexp = '^[a-zA-Z0-9]{8,63}$'
         pattern.error = "Only printable alphanumeric characters are permitted in your password. Maximal size 63 chars"
 
-        [main.hotspot1.advanced__1]
+        [main.hotspot.advanced]
         ask = "Advanced settings"
         type = "boolean"
-        bind = "array_settings()"
 
-        [main.hotspot1.ip4_nat_prefix__1]
+        [main.hotspot.ip4_nat_prefix]
         ask = "IPv4 NAT prefix (/24)"
         type = "string"
-        bind = "array_settings()"
-        visible = "advanced__1"
+        visible = "advanced"
         pattern.regexp = '^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$'
         pattern.error = "Please provide a private /24 range in the format xxx.xxx.xxx"
 
-        [main.hotspot1.ip6_net__1]
+        [main.hotspot.ip6_net]
         ask = "IPv6 delegated prefix"
         type = "string"
-        bind = "array_settings()"
         optional = true
-        visible = "advanced__1"
+        visible = "advanced"
         pattern.regexp = '^[0-9a-fA-F:]+$'
         pattern.error = "Please provide a valid IPv6 Prefix"
 
-        [main.hotspot1.ip6_firewall__1]
+        [main.hotspot.ip6_firewall]
         ask = "IPv6 firewall"
         type = "boolean"
-        bind = "array_settings()"
-        visible = "advanced__1"
+        visible = "advanced"
 
-        [main.hotspot1.dns__1]
+        [main.hotspot.dns]
         ask = "DNS resolvers"
         type = "tags"
-        bind = "array_settings()"
-        visible = "advanced__1"
-        pattern.regexp = '^([0-9.]{7,15}|[0-9a-fA-F:]+)$'
-        pattern.error = "Not an ip"
-
-    [main.hotspot2]
-    name = "Hotspot 2"
-    visible = "! no_antenna && multissid >= 2"
-
-        [main.hotspot2.wifi_ssid__2]
-        ask = "Name (SSID)"
-        type = "string"
-        bind = "array_settings()"
-        pattern.regexp = '^[\w \-]{1,32}$'
-        pattern.error = "SSID in this app are limited to letter, number space, dash and underscores."
-
-        [main.hotspot2.wifi_secure__2]
-        ask = "Secure"
-        type = "boolean"
-        bind = "array_settings()"
-
-        [main.hotspot2.wifi_passphrase__2]
-        ask = "Password (WPA2)"
-        type = "string"
-        bind = "array_settings()"
-        redact = true
-        visible = "wifi_secure__2"
-        pattern.regexp = '^[a-zA-Z0-9]{8,63}$'
-        pattern.error = "Only printable alphanumeric characters are permitted in your password. Maximal size 63 chars"
-
-        [main.hotspot2.advanced__2]
-        ask = "Advanced settings"
-        type = "boolean"
-        bind = "array_settings()"
-
-        [main.hotspot2.ip4_nat_prefix__2]
-        ask = "IPv4 NAT prefix (/24)"
-        type = "string"
-        bind = "array_settings()"
-        visible = "advanced__2"
-        pattern.regexp = '^[0-9.]{7,15}$'
-        pattern.error = "Please provide a valid IP"
-
-        [main.hotspot2.ip6_net__2]
-        ask = "IPv6 delegated prefix"
-        type = "string"
-        bind = "array_settings()"
-        visible = "advanced__2"
-        pattern.regexp = '^[0-9a-fA-F:]+$'
-        pattern.error = "Please provide a valid IPv6 Prefix"
-
-        [main.hotspot2.ip6_firewall__2]
-        ask = "IPv6 firewall"
-        type = "boolean"
-        bind = "array_settings()"
-        visible = "advanced__2"
-
-        [main.hotspot2.dns__2]
-        ask = "DNS resolvers"
-        type = "tags"
-        bind = "array_settings()"
-        visible = "advanced__2"
-        pattern.regexp = '^([0-9.]{7,15}|[0-9a-fA-F:]+)$'
-        pattern.error = "Not an ip"
-
-    [main.hotspot3]
-    name = "Hotspot 3"
-    visible = "! no_antenna && multissid >= 3"
-
-        [main.hotspot3.wifi_ssid__3]
-        ask = "Name (SSID)"
-        type = "string"
-        bind = "array_settings()"
-        pattern.regexp = '^[\w \-]{1,32}$'
-        pattern.error = "SSID in this app are limited to letter, number space, dash and underscores."
-
-        [main.hotspot3.wifi_secure__3]
-        ask = "Secure"
-        type = "boolean"
-        bind = "array_settings()"
-
-        [main.hotspot3.wifi_passphrase__3]
-        ask = "Password (WPA2)"
-        type = "string"
-        bind = "array_settings()"
-        redact = true
-        visible = "wifi_secure__3"
-        pattern.regexp = '^[a-zA-Z0-9]{8,63}$'
-        pattern.error = "Only printable alphanumeric characters are permitted in your password. Maximal size 63 chars"
-
-        [main.hotspot3.advanced__3]
-        ask = "Advanced settings"
-        type = "boolean"
-        bind = "array_settings()"
-
-        [main.hotspot3.ip4_nat_prefix__3]
-        ask = "IPv4 NAT prefix (/24)"
-        type = "string"
-        bind = "array_settings()"
-        visible = "advanced__3"
-        pattern.regexp = '^[0-9.]{7,15}$'
-        pattern.error = "Please provide a valid IP"
-
-        [main.hotspot3.ip6_net__3]
-        ask = "IPv6 delegated prefix"
-        type = "string"
-        bind = "array_settings()"
-        visible = "advanced__3"
-        pattern.regexp = '^[0-9a-fA-F:]+$'
-        pattern.error = "Please provide a valid IPv6 Prefix"
-
-        [main.hotspot3.ip6_firewall__3]
-        ask = "IPv6 firewall"
-        type = "boolean"
-        bind = "array_settings()"
-        visible = "advanced__3"
-
-        [main.hotspot3.dns__3]
-        ask = "DNS resolvers"
-        type = "tags"
-        bind = "array_settings()"
-        visible = "advanced__3"
+        bind = "null"
+        visible = "advanced"
         pattern.regexp = '^([0-9.]{7,15}|[0-9a-fA-F:]+)$'
         pattern.error = "Not an ip"
 
diff --git a/manifest.json b/manifest.json
index f2ecc47..8dff521 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Create and manager wifi networks, share Internet access and use YunoHost apps accross wifi",
         "fr": "Créer et configurer des réseaux wifi, partager l'accès a Internet et utiliser les applications YunoHost via wifi"
     },
-    "version": "2.0~ynh4",
+    "version": "2.1~ynh1",
     "url": "https://github.com/labriqueinternet/hotspot_ynh",
     "license": "AGPL-3.0",
     "maintainer": {
@@ -21,7 +21,7 @@
     "requirements": {
         "yunohost": ">= 4.3.2"
     },
-    "multi_instance": false,
+    "multi_instance": true,
     "services": [],
     "arguments": {
         "install" : [
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 0687a14..13ceb53 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -12,9 +12,33 @@ free_firmware_packages="firmware-ath9k-htc"
 # PERSONAL HELPERS
 #=================================================
 
+function other_hotspot_apps()
+{
+  local app_shortname="${app%%__*}"
+  local hotspot_apps=$(yunohost app list --output-as json | jq -r .apps[].id | grep -F $app_shortname)
+  # Remove this app from hotspot apps list
+  grep -F -x -v $app <<< ${hotspot_apps}
+}
+
 function iw_devices()
 {
-  echo -n $(/sbin/iw dev | grep Interface | grep -v 'mon\.' | grep -v hotspot | awk '{ print $NF }') | tr ' ' '|'
+  /sbin/iw dev | grep Interface | grep -v 'mon\.' | grep -v hotspot | awk '{ print $NF }'
+}
+
+function used_iw_devices()
+{
+  for hotspot_app in $(other_hotspot_apps); do
+    hotspot_wifi_device=$(ynh_app_setting_get --app=$hotspot_app --key=wifi_device)
+    if [[ -n "${hotspot_wifi_device}" ]]; then
+      echo "${hotspot_wifi_device}"
+    fi
+  done
+}
+
+function unused_iw_devices()
+{
+  # Only prints devices that are not in the list of used devices
+  iw_devices | grep -F -v -f <(used_iw_devices)
 }
 
 function check_armbian_nonfree_conflict()
@@ -48,6 +72,32 @@ function hot_reload_usb_wifi_cards()
   done
 }
 
+function configure_hostapd()
+{
+  if [[ "${wifi_secure}" -eq 1 ]]; then
+		sec_comment=""
+	else
+		sec_comment="#"
+	fi
+
+	ynh_add_config --template="/etc/hostapd/$app/hostapd.conf.tpl" --destination="/etc/hostapd/$app/hostapd.conf"
+}
+
+function configure_dnsmasq()
+{
+  ynh_add_config --template="/etc/dnsmasq.$app/dnsmasq.conf.tpl" --destination="/etc/dnsmasq.d/$app.conf"
+  systemctl restart dnsmasq
+}
+
+function configure_dhcp()
+{
+  ynh_add_config --template="/etc/dnsmasq.$app/dhcpdv4.conf.tpl" --destination="/etc/dnsmasq.$app/dhcpdv4.conf"
+
+	if [[ -n "${ip6_net}" ]] && [[ "${ip6_net}" != "none" ]]; then
+		ynh_add_config --template="/etc/dnsmasq.$app/dhcpdv6.conf.tpl" --destination="/etc/dnsmasq.$app/dhcpdv6.conf"
+	fi  
+}
+
 #=================================================
 # EXPERIMENTAL HELPERS
 #=================================================
diff --git a/scripts/backup b/scripts/backup
index 8284b04..de71cba 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -40,17 +40,22 @@ ynh_print_info --message="Declaring files to be backed up..."
 # BACKUP THE APP MAIN DIR
 #=================================================
 
-for FILE in $(ls /etc/hostapd/hostapd.*.conf 2>/dev/null)
-do
-	ynh_backup --src_path="$FILE"
-done
+ynh_backup --src_path="/etc/hostapd/$app/hostapd.conf.tpl"
+ynh_backup --src_path="/etc/hostapd/$app/hostapd.conf" --not_mandatory
 
-ynh_backup --src_path="/etc/dnsmasq.dhcpd/dhcpdv6.conf.tpl"
-ynh_backup --src_path="/etc/dnsmasq.dhcpd/dhcpdv4.conf.tpl"
+ynh_backup --src_path="/etc/dnsmasq.$app/dnsmasq.conf.tpl"
+ynh_backup --src_path="/etc/dnsmasq.d/$app.conf" --not_mandatory
+
+ynh_backup --src_path="/etc/dnsmasq.$app/dhcpdv6.conf.tpl"
+ynh_backup --src_path="/etc/dnsmasq.$app/dhcpdv6.conf" --not_mandatory
+
+ynh_backup --src_path="/etc/dnsmasq.$app/dhcpdv4.conf.tpl"
+ynh_backup --src_path="/etc/dnsmasq.$app/dhcpdv4.conf" --not_mandatory
 
 ynh_backup --src_path="/usr/local/bin/$service_name"
 
-ynh_backup --src_path="/etc/init.d/hostapd"
+ynh_backup --src_path="/etc/openvpn/scripts/route-up.d/90-$service_name"
+ynh_backup --src_path="/etc/openvpn/scripts/route-down.d/90-$service_name"
 
 #=================================================
 # SPECIFIC BACKUP
@@ -59,6 +64,7 @@ ynh_backup --src_path="/etc/init.d/hostapd"
 #=================================================
 
 ynh_backup --src_path="/etc/systemd/system/$service_name.service"
+ynh_backup --src_path="/etc/systemd/system/hostapd@$app.service"
 
 #=================================================
 # END OF SCRIPT
diff --git a/scripts/config b/scripts/config
index 78fa748..b493dbf 100644
--- a/scripts/config
+++ b/scripts/config
@@ -27,7 +27,7 @@ final_path=$(ynh_app_setting_get $app final_path)
 #=================================================
 
 get__no_antenna() {
-    if [[ $(iw_devices) == "" ]]
+    if [[ "$(unused_iw_devices)" == "" ]]
     then
         echo "value: true"
     else
@@ -37,9 +37,9 @@ get__no_antenna() {
 
 get__status() {
     local service_enabled=$(ynh_app_setting_get $app service_enabled)
-    if systemctl is-active hostapd -q
+    if systemctl is-active hostapd@$app -q
     then
-        if [ $service_enabled -eq 1 ]
+        if [[ "$service_enabled" -eq 1 ]]
         then
             cat << EOF
 style: success
@@ -54,7 +54,7 @@ ask:
   en: Your Hotspot is running, but it shouldn't !
 EOF
         fi
-    elif [ $service_enabled -eq 1 ]
+    elif [[ "$service_enabled" -eq 1 ]]
     then
         cat << EOF
 style: danger
@@ -62,7 +62,7 @@ ask:
   en: |-
     Your Hotspot is down ! Here are errors logged in the last 5 minutes
     \`\`\`
-$(journalctl -u hostapd -n10 -o cat | sed 's/^/    /g')
+$(journalctl -u hostapd@$app -n10 -o cat | sed 's/^/    /g')
     \`\`\`
 EOF
     else
@@ -76,14 +76,15 @@ EOF
 }
 
 get__wifi_device() {
-    if [[ $(iw_devices) == "" ]]
+    local unused_wifi_devices=$(unused_iw_devices)
+    if [[ -z "${unused_wifi_devices}" ]]
     then
         echo "choices: []"
     else
         cat << EOF
 choices:
 EOF
-        for device in $(iw_devices | sed "s/|/ /g")
+        for device in $unused_wifi_devices
         do
             echo "  $device: $device"
         done
@@ -92,127 +93,112 @@ EOF
     echo "value: '$(ynh_app_setting_get $app wifi_device)'"
 }
 
-get__array_settings() {
-    local short_setting="${1%%__*}"
-    local index="${1#*__}"
-    IFS='|' read -a values <<< "$(ynh_app_setting_get $app $short_setting)"
-    echo "value: \"${values[$(($index - 1))]:-}\""
+get__dns() {
+    ip6_net=$(ynh_app_setting_get --app=$app --key=ip6_net)
+    ip6_dns=$(ynh_app_setting_get --app=$app --key=ip6_dns | tr -d '[]')
+    ip4_nat_prefix=$(ynh_app_setting_get --app=$app --key=ip4_nat_prefix)
+    ip4_dns=$(ynh_app_setting_get --app=$app --key=ip4_dns)
+
+    if [[ -n "${ip6_net}" ]] && [[ -z "${ip6_dns}" ]]; then
+        ip6_dns="${ip6_net}1"
+    fi
+
+    if [[ -n "${ip4_nat_prefix}" ]] && [[ -z "${ip4_dns}" ]]; then
+        ip4_dns="${ip4_nat_prefix}.1"
+    fi
+
+    echo "value: ${ip4_dns},${ip6_dns}"
 }
 
 #=================================================
 # SPECIFIC VALIDATORS FOR TOML SHORT KEYS
 #=================================================
-is_unique() {
-    local short_setting="$1"
-    local short_setting__1="$1__1"
-    local short_setting__2="$1__2"
-    local short_setting__3="$1__3"
-    if [[ "${!short_setting__1}" == "${!short_setting__2}" ]]
-    then
-        return 1
-    elif [ "$multissid" -ge "3" ] && [[ "${!short_setting__1}" == "${!short_setting__3}" ]]
-    then
-        return 1
-    elif [ "$multissid" -ge "3" ] && [[ "${!short_setting__2}" == "${!short_setting__3}" ]]
-    then
-        return 1
-    fi
-    return 0
-}
+
 validate__wifi_ssid() {
-    local wifi_ssid_var="wifi_ssid__$1"
-    if [ "$multissid" -ge "$1" ] && [[ -z "${!wifi_ssid_var}" ]]
+    if [[ -z "${wifi_ssid}" ]]
     then
         echo 'SSID required'
     fi
-    if ! is_unique wifi_ssid
-    then
-        echo 'All Wifi names must be unique'
-    fi
 }
 
 validate__wifi_passphrase() {
-    local wifi_secure_var="wifi_secure__$1"
-    local wifi_passphrase_var="wifi_passphrase__$1"
-    if [ "$multissid" -ge "$1" ] && [[ "${!wifi_secure_var}" == "1" ]] && [[ -z "${!wifi_passphrase_var}" ]]
+    if [[ "${wifi_secure}" == "1" ]] && [[ -z "${wifi_passphrase}" ]]
     then
         echo 'In WPA2 secure mode, you need to provide a passphrase'
     fi
 }
 
 validate__ip4_nat_prefix() {
-    local ip4_nat_prefix_var="ip4_nat_prefix__$1"
-    if [ "$multissid" -ge "$1" ] && [[ -z "${!ip4_nat_prefix_var}" ]]
+    if [[ -z "${ip4_nat_prefix}" ]]
     then
         echo 'Private IPv4 nat prefix required'
     fi
-    if ! is_unique ip4_nat_prefix
-    then
-        echo 'All IPv4 prefix must be unique'
-    fi
 }
 
 validate__dns() {
-    local dns_var="dns__$1"
-    local ip6_net_var="dns__$1"
-    if [ "$multissid" -ge "$1" ] && ! echo "${!dns_var}" | grep -q "\."
+    if ! echo "${dns}" | grep -q "\."
     then
         echo 'IPv4 DNS required'
     fi
-    if [ "$multissid" -ge "$1" ] && [[ -n "${!ip6_net_var}" ]] && ! echo "${!dns_var}" | grep -q ":"
+    if [[ -n "${ip6_net}" ]] && ! echo "${dns}" | grep -q ":"
     then
         echo 'IPv6 DNS required'
     fi
 }
 
-validate__array_settings() {
-    local short_setting="${1%%__*}"
-    local index="${1#*__}"
-    if type -t validate__$short_setting | grep -q '^function$' 2>/dev/null;
-    then
-        validate__$short_setting $index
-    fi
-}
-
 #=================================================
 # SPECIFIC SETTERS FOR TOML SHORT KEYS
 #=================================================
-set__array_settings() {
-    local short_setting="${1%%__*}"
-    local index="${1#*__}"
-    local type="${types[$1]}"
-    local value="${!1}"
-    if [[ "$type" == "string" ]] && [ "$multissid" -lt "$index" ]
-    then
-        value=""
-    fi
-    local values="$(ynh_app_setting_get $app $short_setting | awk "BEGIN{FS=OFS=\"|\"} {\$${index}=\"${value}\"}"1)"
-    ynh_app_setting_set --app=$app --key=$short_setting --value="$values"
-    ynh_print_info --message="Configuration key '$short_setting' edited in app settings"
-}
 
+set__dns() {
+    ip6_dns=""
+    ip4_dns=""
+    for ip in $(echo "${dns}" | tr ',' ' '); do
+        if [[ "$ip" == *":"* ]]; then
+            ip6_dns+="[$ip],"
+        else
+            ip4_dns+="$ip,"
+        fi
+    done
+    # Remove trailing ,
+    ip6_dns="${ip6_dns%%,}"
+    ip4_dns="${ip4_dns%%,}"
+
+    if [[ -n "${ip6_net}" ]] && [[ -z "${ip6_dns}" ]]; then
+        ip6_dns="${ip6_net}1"
+    fi
+
+    if [[ -n "${ip4_nat_prefix}" ]] && [[ -z "${ip4_dns}" ]]; then
+        ip4_dns="${ip4_nat_prefix}.1"
+    fi
+    
+    ynh_app_setting_set $app ip6_dns "${ip6_dns}"
+    ynh_app_setting_set $app ip4_dns "${ip4_dns}"
+}
 
 #=================================================
 # OVERWRITING VALIDATE STEP 
 #=================================================
-ynh_app_config_validate() {
-    _ynh_app_config_validate
-}
 
 #=================================================
 # OVERWRITING APPLY STEP 
 #=================================================
 ynh_app_config_apply() {
-    
+    service_name=$(ynh_app_setting_get --app=$app --key=service_name)
+
     # Stop vpn client
     ynh_print_info --message="Stopping hotspot in order to edit files"
-    /usr/local/bin/ynh-hotspot stop
+    /usr/local/bin/${service_name} stop
 
     _ynh_app_config_apply
-    
-    # Start vpn client
+
+    configure_hostapd
+    configure_dnsmasq
+    configure_dhcp
+
+    # Start hotspot
     ynh_print_info --message="Starting hotspot service if needed"
-    /usr/local/bin/ynh-hotspot start
+    /usr/local/bin/${service_name} start
 
 }
 
diff --git a/scripts/install b/scripts/install
index 8032f2a..5f746d4 100644
--- a/scripts/install
+++ b/scripts/install
@@ -30,7 +30,7 @@ firmware_nonfree=$YNH_APP_ARG_FIRMWARE_NONFREE
 app=$YNH_APP_INSTANCE_NAME
 
 # the service name must match the service template files
-service_name='ynh-hotspot'
+service_name=ynh-$app
 
 #=================================================
 # CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
@@ -117,32 +117,32 @@ ynh_system_user_create --username=$app
 #=================================================
 ynh_script_progression --message="Configuring hotspot..."
 
-if [[ ! -v ip6_net ]]; then # if ip6_net not set
-	ip6_net=""
+ip6_net=""
+ip6_dns=""
 
-	if [[ -e /tmp/.ynh-vpnclient-started ]]; then
-		vpnclient_ip6_net=$(ynh_app_setting_get vpnclient ip6_net 2>&1)
-
-		if [[ $vpnclient_ip6_net =~ :: ]]; then
-			ip6_net=${vpnclient_ip6_net}
-		fi
-	fi
+ip4_nat_prefix_index=${app##*__}
+if [[ "${ip4_nat_prefix_index}" == "${app}" ]]; then
+  	ip4_nat_prefix_index=0
 fi
+ip4_nat_prefix="10.${ip4_nat_prefix_index}.242"
+ip4_dns="${ip4_nat_prefix}.1"
 
 hot_reload_usb_wifi_cards
-wifi_device=$(iw_devices | awk -F\| '{ print $1 }')
+wifi_device=$(unused_iw_devices | head -n 1)
+wifi_secure=1
+wifi_channel=6
 
-ynh_app_setting_set --app=$app --key=multissid --value=1
-ynh_app_setting_set --app=$app --key=ssid_nb --value=1
 ynh_app_setting_set --app=$app --key=wifi_ssid --value="${wifi_ssid}"
-ynh_app_setting_set --app=$app --key=wifi_secure --value=1
+ynh_app_setting_set --app=$app --key=wifi_secure --value="${wifi_secure}"
 ynh_app_setting_set --app=$app --key=wifi_passphrase --value="${wifi_passphrase}"
 ynh_app_setting_set --app=$app --key=wifi_device --value="${wifi_device}"
-ynh_app_setting_set --app=$app --key=wifi_channel --value=6
+ynh_app_setting_set --app=$app --key=wifi_channel --value="${wifi_channel}"
+ynh_app_setting_set --app=$app --key=advanced --value=0
 ynh_app_setting_set --app=$app --key=ip6_firewall --value=1
 ynh_app_setting_set --app=$app --key=ip6_net --value="${ip6_net}"
-ynh_app_setting_set --app=$app --key=dns --value="10.0.242.1"
-ynh_app_setting_set --app=$app --key=ip4_nat_prefix --value=10.0.242
+ynh_app_setting_set --app=$app --key=ip6_dns --value="${ip6_dns}"
+ynh_app_setting_set --app=$app --key=ip4_dns --value="${ip4_dns}"
+ynh_app_setting_set --app=$app --key=ip4_nat_prefix --value="${ip4_nat_prefix}"
 
 if [[ -z $wifi_device ]]; then
 	ynh_app_setting_set --app=$app --key=service_enabled --value=0
@@ -155,30 +155,35 @@ fi
 #=================================================
 ynh_script_progression --message="Copying configuration files..."
 
-mkdir -pm 0755 /etc/dnsmasq.dhcpd/
-chown root: /etc/dnsmasq.dhcpd/
+mkdir -pm 0755 /etc/hostapd/$app/
+chown root: /etc/hostapd/$app/
 
-install -b -o root -g root -m 0644 ../conf/hostapd.*.conf /etc/hostapd/
-install -b -o root -g root -m 0644 ../conf/dnsmasq_dhcpdv6.conf.tpl /etc/dnsmasq.dhcpd/dhcpdv6.conf.tpl
-install -b -o root -g root -m 0644 ../conf/dnsmasq_dhcpdv4.conf.tpl /etc/dnsmasq.dhcpd/dhcpdv4.conf.tpl
+mkdir -pm 0755 /etc/dnsmasq.$app/
+chown root: /etc/dnsmasq.$app/
+
+install -b -o root -g root -m 0644 ../conf/hostapd.conf.tpl /etc/hostapd/$app/hostapd.conf.tpl
+install -b -o root -g root -m 0644 ../conf/dnsmasq.conf.tpl /etc/dnsmasq.$app/dnsmasq.conf.tpl
+install -b -o root -g root -m 0644 ../conf/dnsmasq_dhcpdv6.conf.tpl /etc/dnsmasq.$app/dhcpdv6.conf.tpl
+install -b -o root -g root -m 0644 ../conf/dnsmasq_dhcpdv4.conf.tpl /etc/dnsmasq.$app/dhcpdv4.conf.tpl
 
 # Copy init script
-install -o root -g root -m 0755 ../conf/$service_name /usr/local/bin/
+ynh_add_config --template="../conf/ynh-hotspot" --destination="/usr/local/bin/$service_name"
+chmod 0755 "/usr/local/bin/$service_name"
+
+# Copy openvpn scripts
+mkdir -pm 0755 /etc/openvpn/scripts
+mkdir -pm 0755 /etc/openvpn/scripts/route-up.d
+mkdir -pm 0755 /etc/openvpn/scripts/route-down.d
+ynh_add_config --template="../conf/openvpn_90-hotspot" --destination="/etc/openvpn/scripts/route-up.d/90-$service_name"
+ynh_add_config --template="../conf/openvpn_90-hotspot" --destination="/etc/openvpn/scripts/route-down.d/90-$service_name"
+chmod 0755 "/etc/openvpn/scripts/route-up.d/90-${service_name}"
+chmod 0755 "/etc/openvpn/scripts/route-down.d/90-${service_name}"
 
 #=================================================
 # CONFIGURE HOSTAPD
 #=================================================
 ynh_script_progression --message="Configuring hostapd..."
 
-## hostapd
-ynh_replace_string --match_string="^DAEMON_CONF=$" --replace_string="&/etc/hostapd/hostapd.conf" --target_file=/etc/init.d/hostapd
-ynh_store_file_checksum --file="/etc/init.d/hostapd"
-
-# We also need to put this in /etc/default/hostapd because on some setup
-# like RPi, the version of hostapd is different and /etc/init.d/hostapd
-# isnt used ... instead the service is "pure systemd" ...
-echo "DAEMON_CONF=/etc/hostapd/hostapd.conf" > /etc/default/hostapd
-
 # Set default inits
 # The boot order of these services are important, so they are disabled by default
 # and the ynh-hotspot service handles them.
@@ -186,6 +191,12 @@ systemctl disable hostapd --quiet 2>&1
 systemctl stop hostapd 2>&1
 systemctl unmask hostapd 2>&1 # On some system e.g. RPi, for some reason hostapd is masked after install ...
 
+if [[ -n "${wifi_device}" ]]; then 
+	configure_hostapd
+	configure_dnsmasq
+	configure_dhcp
+fi
+
 #=================================================
 # SETUP SYSTEMD
 #=================================================
@@ -193,13 +204,15 @@ ynh_script_progression --message="Configuring a systemd service..."
 
 # Create a dedicated systemd config
 ynh_add_systemd_config --service=$service_name
+# Create custom systemd config for hostapd to handle multiple wifi devices
+ynh_add_systemd_config --service="hostapd@$app" --template="../conf/systemd_hostapd.service"
 
 #=================================================
 # INTEGRATE SERVICE IN YUNOHOST
 #=================================================
 ynh_script_progression --message="Integrating service in YunoHost..."
 
-yunohost service add $service_name --description "Creates a Wi-Fi access point" --test_status "systemctl is-active hostapd"
+yunohost service add $service_name --description "Creates a Wi-Fi access point" --test_status "systemctl is-active hostapd@$app"
 
 #=================================================
 # START SYSTEMD SERVICE
diff --git a/scripts/remove b/scripts/remove
index 4ccfd27..7b3d158 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -26,12 +26,9 @@ service_name=$(ynh_app_setting_get --app=$app --key=service_name)
 #=================================================
 
 # Remove the service from the list of services known by Yunohost (added from `yunohost service add`)
-if yunohost service status $service_name >/dev/null 2>&1
-then
-	ynh_script_progression --message="Removing $app service"
-	yunohost service stop $service_name
-	yunohost service remove $service_name
-fi
+ynh_script_progression --message="Removing $app service"
+yunohost service stop $service_name
+yunohost service remove $service_name
 
 #=================================================
 # STOP AND REMOVE SERVICE
@@ -40,6 +37,7 @@ ynh_script_progression --message="Stopping and removing the systemd service..."
 
 # Remove the dedicated systemd config
 ynh_remove_systemd_config --service=$service_name
+ynh_remove_systemd_config --service="hostapd@$app"
 
 #=================================================
 # REMOVE DEPENDENCIES
@@ -54,37 +52,37 @@ ynh_remove_app_dependencies
 #=================================================
 ynh_script_progression --message="Removing app main directory..."
 
+ynh_secure_remove --file="/etc/openvpn/scripts/route-up.d/90-${service_name}"
+ynh_secure_remove --file="/etc/openvpn/scripts/route-down.d/90-${service_name}"
+
 # Remove the app directory securely
 ynh_secure_remove --file="/usr/local/bin/$service_name"
 
-for FILE in $(ls /tmp/.ynh-hotspot-* 2>/dev/null)
-do
+for FILE in $(ls /tmp/.${service_name}-* 2>/dev/null); do
     ynh_secure_remove --file="$FILE"
 done
 
 # Remove confs
-ynh_secure_remove --file="/etc/dnsmasq.dhcpd/dhcpdv6.conf.tpl"
-ynh_secure_remove --file="/etc/dnsmasq.dhcpd/dhcpdv4.conf.tpl"
-for FILE in $(ls /etc/hostapd/hostapd.*.conf 2>/dev/null)
-do
-    ynh_secure_remove --file="$FILE"
-done
+ynh_secure_remove --file="/etc/dnsmasq.d/$app.conf"
+systemctl restart dnsmasq
+
+ynh_secure_remove --file="/etc/dnsmasq.$app/"
+ynh_secure_remove --file="/etc/hostapd/$app/"
 
 #=================================================
 # CLOSE A PORT
 #=================================================
 
-if yunohost firewall list | grep -q "\- 547$"
-then
-	ynh_script_progression --message="Closing port 547"
-	ynh_exec_warn_less yunohost firewall disallow TCP 547
-fi
+if [[ -z "$(other_hotspot_apps)" ]]; then
+	if yunohost firewall list | grep -q "\- 547$"; then
+		ynh_script_progression --message="Closing port 547"
+		ynh_exec_warn_less yunohost firewall disallow TCP 547
+	fi
 
-
-if yunohost firewall list | grep -q "\- 67$"
-then
-	ynh_script_progression --message="Closing port 67"
-	ynh_exec_warn_less yunohost firewall disallow TCP 67
+	if yunohost firewall list | grep -q "\- 67$"; then
+		ynh_script_progression --message="Closing port 67"
+		ynh_exec_warn_less yunohost firewall disallow TCP 67
+	fi
 fi
 
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index fb047d1..679bb30 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -29,12 +29,22 @@ app=$YNH_APP_INSTANCE_NAME
 
 firmware_nonfree=$(ynh_app_setting_get --app=$app --key=firmware_nonfree)
 service_name=$(ynh_app_setting_get --app=$app --key=service_name)
+wifi_device=$(ynh_app_setting_get --app=$app --key=wifi_device)
 
 #=================================================
 # CHECK IF THE APP CAN BE RESTORED
 #=================================================
 ynh_script_progression --message="Validating restoration parameters..."
 
+#=================================================
+# FIND AND OPEN A PORT
+#=================================================
+ynh_script_progression --message="Configuring firewall..."
+
+# Update firewall for DHCP
+ynh_exec_warn_less yunohost firewall allow --no-upnp --ipv6 UDP 547
+ynh_exec_warn_less yunohost firewall allow --no-upnp UDP 67
+
 # Meh idk where to put this ... On RPi, by default wlan is blocked
 if test -e /usr/sbin/rfkill && rfkill | grep wlan | grep -q -w 'blocked'
 then
@@ -61,16 +71,23 @@ else
 	pkg_dependencies="$pkg_dependencies $free_firmware_packages"
 fi
 
-for FILE in $(ls /etc/hostapd/hostapd.conf{.tpl?,} 2>/dev/null)
-do
-    ynh_restore_file --origin_path="$FILE"
-done
-ynh_restore_file --origin_path="/etc/dnsmasq.dhcpd/dhcpdv6.conf.tpl"
-ynh_restore_file --origin_path="/etc/dnsmasq.dhcpd/dhcpdv4.conf.tpl"
+ynh_restore_file --origin_path="/etc/hostapd/$app/hostapd.conf.tpl"
+ynh_restore_file --origin_path="/etc/hostapd/$app/hostapd.conf" --not_mandatory
+
+ynh_restore_file --origin_path="/etc/dnsmasq.$app/dnsmasq.conf.tpl"
+ynh_restore_file --origin_path="/etc/dnsmasq.d/$app.conf" --not_mandatory
+systemctl restart dnsmasq
+
+ynh_restore_file --origin_path="/etc/dnsmasq.$app/dhcpdv6.conf.tpl"
+ynh_restore_file --origin_path="/etc/dnsmasq.$app/dhcpdv6.conf" --not_mandatory
+
+ynh_restore_file --origin_path="/etc/dnsmasq.$app/dhcpdv4.conf.tpl"
+ynh_restore_file --origin_path="/etc/dnsmasq.$app/dhcpdv4.conf" --not_mandatory
 
 ynh_restore_file --origin_path="/usr/local/bin/$service_name"
 
-ynh_restore_file --origin_path="/etc/init.d/hostapd"
+ynh_restore_file --origin_path="/etc/openvpn/scripts/route-up.d/90-${service_name}"
+ynh_restore_file --origin_path="/etc/openvpn/scripts/route-down.d/90-${service_name}"
 
 #=================================================
 # SPECIFIC RESTORATION
@@ -88,14 +105,14 @@ ynh_install_app_dependencies $pkg_dependencies
 ynh_script_progression --message="Restoring the systemd configuration..."
 
 ynh_restore_file --origin_path="/etc/systemd/system/$service_name.service"
-systemctl enable $service_name.service --quiet
+ynh_restore_file --origin_path="/etc/systemd/system/hostapd@$app.service"
 
 #=================================================
 # INTEGRATE SERVICE IN YUNOHOST
 #=================================================
 ynh_script_progression --message="Integrating service in YunoHost..."
 
-yunohost service add $service_name --description "Creates a Wi-Fi access point" --test_status "systemctl is-active hostapd"
+yunohost service add $service_name --description "Creates a Wi-Fi access point" --test_status "systemctl is-active hostapd@$app"
 
 #=================================================
 # START SYSTEMD SERVICE
@@ -103,7 +120,10 @@ yunohost service add $service_name --description "Creates a Wi-Fi access point"
 ynh_script_progression --message="Starting a systemd service..."
 
 hot_reload_usb_wifi_cards
-wifi_device=$(iw_devices | awk -F\| '{ print $1 }')
+if [[ -z "$wifi_device" ]] || ! grep -q -F "$wifi_device" <(unused_iw_devices); then
+	wifi_device=$(unused_iw_devices | head -n 1)
+	ynh_app_setting_set --app=$app --key=wifi_device --value="${wifi_device}"
+fi
 
 if [[ -z $wifi_device ]]; then
 	ynh_app_setting_set --app=$app --key=service_enabled --value=0
diff --git a/scripts/upgrade b/scripts/upgrade
index 519721e..1d56a39 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -19,6 +19,18 @@ app=$YNH_APP_INSTANCE_NAME
 firmware_nonfree=$(ynh_app_setting_get --app=$app --key=firmware_nonfree)
 service_name=$(ynh_app_setting_get --app=$app --key=service_name)
 
+wifi_device=$(ynh_app_setting_get --app=$app --key=wifi_device)
+wifi_ssid=$(ynh_app_setting_get --app=$app --key=wifi_ssid)
+wifi_secure=$(ynh_app_setting_get --app=$app --key=wifi_secure)
+wifi_passphrase=$(ynh_app_setting_get --app=$app --key=wifi_passphrase)
+wifi_channel=$(ynh_app_setting_get --app=$app --key=wifi_channel)
+advanced=$(ynh_app_setting_get --app=$app --key=advanced)
+ip4_nat_prefix=$(ynh_app_setting_get --app=$app --key=ip4_nat_prefix)
+ip6_net=$(ynh_app_setting_get --app=$app --key=ip6_net)
+ip6_firewall=$(ynh_app_setting_get --app=$app --key=ip6_firewall)
+dns=$(ynh_app_setting_get --app=$app --key=dns)
+multissid=$(ynh_app_setting_get --app=$app --key=multissid)
+
 #=================================================
 # CHECK VERSION
 #=================================================
@@ -68,10 +80,68 @@ elif [ $firmware_nonfree = "no" ]; then
 fi
 
 if [ -z $service_name ]; then
-	service_name="ynh-hotspot"
+	service_name="ynh-$app"
 	ynh_app_setting_set --app=$app --key=service_name --value=$service_name
 fi
 
+if [[ -n "${multissid}" ]] && [[ "${multissid}" -gt 1 ]]; then
+	wifi_ssid=$(cut -d'|' -f 1 <<< ${wifi_ssid})
+	wifi_secure=$(cut -d'|' -f 1 <<< ${wifi_secure})
+	wifi_passphrase=$(cut -d'|' -f 1 <<< ${wifi_passphrase})
+	advanced=$(cut -d'|' -f 1 <<< ${advanced})
+	ip4_nat_prefix=$(cut -d'|' -f 1 <<< ${ip4_nat_prefix})
+	ip6_net=$(cut -d'|' -f 1 <<< ${ip6_net})
+	ip6_firewall=$(cut -d'|' -f 1 <<< ${ip6_firewall})
+	dns=$(cut -d'|' -f 1 <<< ${dns})
+
+	ynh_app_setting_set --app=$app --key=wifi_ssid --value="${wifi_ssid}"
+	ynh_app_setting_set --app=$app --key=wifi_secure --value="${wifi_secure}"
+	ynh_app_setting_set --app=$app --key=wifi_passphrase --value="${wifi_passphrase}"
+	ynh_app_setting_set --app=$app --key=ip4_nat_prefix --value="${ip4_nat_prefix}"
+	ynh_app_setting_set --app=$app --key=ip6_net --value="${ip6_net}"
+	ynh_app_setting_set --app=$app --key=ip6_firewall --value="${ip6_firewall}"
+fi
+
+if [[ -n "${dns}" ]]; then
+    ip6_dns=""
+    ip4_dns=""
+    for ip in $(echo "${dns}" | tr ',' ' '); do
+        if [[ "$ip" == *":"* ]]; then
+            ip6_dns+="[$ip],"
+        else
+            ip4_dns+="$ip,"
+        fi
+    done
+    # Remove trailing ,
+    ip6_dns="${ip6_dns%%,}"
+    ip4_dns="${ip4_dns%%,}"
+
+	if [[ -z "$(ynh_app_setting_get --app=$app --key=ip6_dns)" ]]; then
+		ynh_app_setting_set --app=$app --key=ip6_dns --value="${ip6_dns}"
+	fi
+	if [[ -z "$(ynh_app_setting_get --app=$app --key=ip4_dns)" ]]; then
+		ynh_app_setting_set --app=$app --key=ip4_dns --value="${ip4_dns}"
+	fi
+
+	ynh_app_setting_delete $app dns
+else
+    ip6_dns=$(ynh_app_setting_get --app=$app --key=ip6_dns)
+    ip4_dns=$(ynh_app_setting_get --app=$app --key=ip4_dns)
+fi
+
+if [[ -n "${multissid}" ]]; then
+    ynh_app_setting_delete --app=$app --key=multissid
+
+	ynh_secure_remove --file="/etc/hostapd/hostapd.conf"
+	ynh_secure_remove --file="/etc/hostapd/hostapd.base.conf"
+	ynh_secure_remove --file="/etc/hostapd/hostapd.accesspoint.conf"
+	ynh_secure_remove --file="/etc/dnsmasq.dhcpd/"
+fi
+
+if [[ -z "${advanced}" ]]; then
+    ynh_app_setting_set --app=$app --key=advanced --value=0
+fi
+
 # Old stuff prior to 2.x
 
 ip6_net=$(ynh_app_setting_get --app=$app --key=ip6_net)
@@ -131,15 +201,41 @@ ynh_install_app_dependencies $pkg_dependencies
 #=================================================
 ynh_script_progression --message="Copying configuration..."
 
-mkdir -pm 0755 /etc/dnsmasq.dhcpd/
-chown root: /etc/dnsmasq.dhcpd/
+hot_reload_usb_wifi_cards
+if [[ -z "$wifi_device" ]] || ! grep -q -F "$wifi_device" <(unused_iw_devices); then
+	wifi_device="$(unused_iw_devices | head -n 1)"
+	ynh_app_setting_set --app=$app --key=wifi_device --value="${wifi_device}"
+fi
 
-install -b -o root -g root -m 0644 ../conf/hostapd.*.conf /etc/hostapd/
-install -b -o root -g root -m 0644 ../conf/dnsmasq_dhcpdv6.conf.tpl /etc/dnsmasq.dhcpd/dhcpdv6.conf.tpl
-install -b -o root -g root -m 0644 ../conf/dnsmasq_dhcpdv4.conf.tpl /etc/dnsmasq.dhcpd/dhcpdv4.conf.tpl
+mkdir -pm 0755 /etc/hostapd/$app/
+chown root: /etc/hostapd/$app/
+
+mkdir -pm 0755 /etc/dnsmasq.$app/
+chown root: /etc/dnsmasq.$app/
+
+install -b -o root -g root -m 0644 ../conf/hostapd.conf.tpl /etc/hostapd/$app/hostapd.conf.tpl
+install -b -o root -g root -m 0644 ../conf/dnsmasq.conf.tpl /etc/dnsmasq.$app/dnsmasq.conf.tpl
+install -b -o root -g root -m 0644 ../conf/dnsmasq_dhcpdv6.conf.tpl /etc/dnsmasq.$app/dhcpdv6.conf.tpl
+install -b -o root -g root -m 0644 ../conf/dnsmasq_dhcpdv4.conf.tpl /etc/dnsmasq.$app/dhcpdv4.conf.tpl
+
+if [[ -n "${wifi_device}" ]]; then 
+	configure_hostapd
+	configure_dnsmasq
+	configure_dhcp
+fi
 
 # Copy init script
-install -o root -g root -m 0755 ../conf/$service_name /usr/local/bin/
+ynh_add_config --template="../conf/ynh-hotspot" --destination="/usr/local/bin/$service_name"
+chmod 0755 "/usr/local/bin/$service_name"
+
+# Copy openvpn scripts
+mkdir -pm 0755 /etc/openvpn/scripts
+mkdir -pm 0755 /etc/openvpn/scripts/route-up.d
+mkdir -pm 0755 /etc/openvpn/scripts/route-down.d
+ynh_add_config --template="../conf/openvpn_90-hotspot" --destination="/etc/openvpn/scripts/route-up.d/90-$service_name"
+ynh_add_config --template="../conf/openvpn_90-hotspot" --destination="/etc/openvpn/scripts/route-down.d/90-$service_name"
+chmod 0755 "/etc/openvpn/scripts/route-up.d/90-${service_name}"
+chmod 0755 "/etc/openvpn/scripts/route-down.d/90-${service_name}"
 
 #=================================================
 # SETUP SYSTEMD
@@ -148,6 +244,8 @@ ynh_script_progression --message="Upgrading systemd configuration..."
 
 # Create a dedicated systemd config
 ynh_add_systemd_config --service=$service_name
+# Create custom systemd config for hostapd to handle multiple wifi devices
+ynh_add_systemd_config --service="hostapd@$app" --template="../conf/systemd_hostapd.service"
 
 #=================================================
 # GENERIC FINALIZATION
@@ -156,16 +254,13 @@ ynh_add_systemd_config --service=$service_name
 #=================================================
 ynh_script_progression --message="Integrating service in YunoHost..."
 
-yunohost service add $service_name --description "Creates a Wi-Fi access point" --test_status "systemctl is-active hostapd"
+yunohost service add $service_name --description "Creates a Wi-Fi access point" --test_status "systemctl is-active hostapd@$app"
 
 #=================================================
 # START SYSTEMD SERVICE
 #=================================================
 ynh_script_progression --message="Starting the hotspot service..."
 
-hot_reload_usb_wifi_cards
-wifi_device=$(iw_devices | awk -F\| '{ print $1 }')
-
 if [[ -z $wifi_device ]]; then
 	ynh_app_setting_set --app=$app --key=service_enabled --value=0
 	wifi_device=""