diff --git a/README.md b/README.md
index 91ff443..a446a8c 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ If you don't have YunoHost, please consult [the guide](https://yunohost.org/#/in
 
 Self-hosted To-Do list application
 
-**Shipped version:** 0.18.1~ynh3
+**Shipped version:** 0.18.1~ynh4
 
 **Demo:** https://try.vikunja.io/login
 
diff --git a/conf/front.src b/conf/front.src
index c9d3457..80f5a3b 100644
--- a/conf/front.src
+++ b/conf/front.src
@@ -1,7 +1,6 @@
-SOURCE_URL=https://dl.vikunja.io/frontend/vikunja-frontend-0.18.1.zip
-SOURCE_SUM=bb85c0e89aa7fa9d89d2c07629a6f0658fe517065a91912f51487f7a7ae1b4de
+SOURCE_URL=https://dl.vikunja.io/frontend/vikunja-frontend-0.18.2.zip
+SOURCE_SUM=d2f1069f91ba660fe898d4df7efb40a35dbe743dadaa853a09c79955521ee16f
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=zip
 SOURCE_IN_SUBDIR=false
-SOURCE_FILENAME=
 SOURCE_EXTRACT=true
\ No newline at end of file
diff --git a/doc/DESCRIPTION.md b/doc/DESCRIPTION.md
new file mode 100644
index 0000000..2467012
--- /dev/null
+++ b/doc/DESCRIPTION.md
@@ -0,0 +1,10 @@
+Vikunja is a self-hosted open-source to-do list application for all platforms.
+
+### Features
+
+- Stay organized 
+- Collaborate with peers
+- Tasks  
+- Kanban board
+- CalDAV
+- Links  
\ No newline at end of file
diff --git a/doc/DESCRIPTION_fr.md b/doc/DESCRIPTION_fr.md
index 22f755e..e1f69a4 100644
--- a/doc/DESCRIPTION_fr.md
+++ b/doc/DESCRIPTION_fr.md
@@ -1 +1,10 @@
-Vikunja est une application de liste de tâches Open Source auto-hébergée pour toutes les plateformes.
\ No newline at end of file
+Vikunja est une application de liste de tâches Open Source auto-hébergée pour toutes les plateformes.
+
+### Features
+
+- Stay organized 
+- Collaborate with peers
+- Tasks  
+- Kanban board
+- CalDAV
+- Links  
\ No newline at end of file
diff --git a/manifest.json b/manifest.json
index cfd6598..59d481b 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Self-hosted To-Do list application",
         "fr": "Application de liste de tâches auto-hébergée"
     },
-    "version": "0.18.1~ynh3",
+    "version": "0.18.1~ynh4",
     "url": "https://vikunja.io/",
     "upstream": {
         "license": "GPL-3.0",
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 2bd68b5..4d4651e 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -19,34 +19,6 @@ pkg_dependencies="postgresql apt-transport-https"
 # FUTURE OFFICIAL HELPERS
 #=================================================
 
-# Check the architecture
-#
-# example: architecture=$(ynh_detect_arch)
-#
-# usage: ynh_detect_arch
-#
-# Requires YunoHost version 2.2.4 or higher.
-
-ynh_detect_arch(){
-        local architecture
-        if [ -n "$(uname -m | grep arm64)" ] || [ -n "$(uname -m | grep aarch64)" ]; then
-                architecture="arm64"              
-        elif [ -n "$(uname -m | grep 64)" ]; then
-                architecture="amd64"
-        elif [ -n "$(uname -m | grep 86)" ]; then
-                architecture="386"
-        elif [ -n "$(uname -m | grep armv7)" ]; then
-                architecture="arm7"
-        elif [ -n "$(uname -m | grep armv6)" ]; then
-                architecture="arm6"
-        elif [ -n "$(uname -m | grep armv5)" ]; then
-                architecture="arm5"
-        else
-                architecture="unknown"
-        fi
-        echo $architecture
-}
-
 #=================================================
 # REDIS HELPERS
 #=================================================
diff --git a/scripts/install b/scripts/install
index 87fcf8b..b5a65c2 100644
--- a/scripts/install
+++ b/scripts/install
@@ -24,7 +24,6 @@ domain=$YNH_APP_ARG_DOMAIN
 path_url="/"
 is_public=$YNH_APP_ARG_IS_PUBLIC
 timezone="$(cat /etc/timezone)"
-architecture=$(ynh_detect_arch)
 secret=$(ynh_string_random --length=32)
 
 app=$YNH_APP_INSTANCE_NAME
@@ -108,7 +107,11 @@ ynh_script_progression --message="Installing backend..." --weight=15
 tempdir="$(mktemp -d)"
 ynh_setup_source --dest_dir=$tempdir --source_id=api
 ynh_exec_warn_less dpkg -i $tempdir/vikunja-unstable-amd64.deb
+
+mkdir -p "/opt/vikunja/files"
+
 chmod +x "/opt/vikunja/vikunja"
+chown -R $app:www-data "/opt/vikunja/files"
 
 #=================================================
 # NGINX CONFIGURATION
@@ -128,8 +131,6 @@ ynh_app_setting_set --app=$app --key=path --value=$smtp_user_pwd
 redis_db=$(ynh_redis_get_free_db)
 ynh_add_config --template="../conf/config.yml" --destination="/etc/vikunja/config.yml"
 
-#chmod 600 "/etc/vikunja/config.yml"
-
 #=================================================
 # SETUP SYSTEMD
 #=================================================
diff --git a/scripts/remove b/scripts/remove
index 00d6e5d..c17afff 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -74,7 +74,7 @@ ynh_script_progression --message="Removing $app main directory..." --weight=6
 
 # Remove the app directory securely
 ynh_secure_remove --file="$final_path"
-ynh_secure_remove --file="/etc/vikunja"
+#ynh_secure_remove --file="/etc/vikunja"
 
 #=================================================
 # REMOVE NGINX CONFIGURATION
diff --git a/scripts/restore b/scripts/restore
index 507b857..a5f7ea0 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -69,6 +69,7 @@ ynh_restore_file --origin_path="/etc/vikunja/config.yml"
 
 ynh_restore_file --origin_path="/opt/vikunja"
 chmod +x "/opt/vikunja/vikunja"
+chown -R $app:www-data "/opt/vikunja/files"
 
 #=================================================
 # REINSTALL DEPENDENCIES
diff --git a/scripts/upgrade b/scripts/upgrade
index de27cd2..8946e2f 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -20,7 +20,6 @@ domain=$(ynh_app_setting_get --app=$app --key=domain)
 path_url=$(ynh_app_setting_get --app=$app --key=path)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 port=$(ynh_app_setting_get --app=$app --key=port)
-architecture=$(ynh_detect_arch)
 db_name=$(ynh_app_setting_get --app=$app --key=db_name)
 db_user=$db_name
 db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)
@@ -46,6 +45,11 @@ if ynh_legacy_permissions_exists; then
 	ynh_app_setting_delete --app=$app --key=is_public
 fi
 
+# Create a permission if needed
+if ! ynh_permission_exists --permission="api"; then
+	ynh_permission_create --permission="api" --url="/api" --allowed="visitors" --auth_header="false" --show_tile="false" --protected="true"
+fi
+
 #=================================================
 # BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
 #=================================================
@@ -92,21 +96,25 @@ then
 	ynh_script_progression --message="Upgrading source files..." --weight=5
 
 	# Download, check integrity, uncompress and patch the source from app.src
-	ynh_setup_source --dest_dir="$final_path" --source_id="front"
+	ynh_setup_source --dest_dir="$final_path" --source_id="front" --keep="/etc/vikunja/config.yml"
+
+	mkdir -p "/opt/vikunja/files"
+
 fi
 
 chmod 750 "$final_path"
 chmod -R o-rwx "$final_path"
 chown -R $app:www-data "$final_path"
-chmod +x /opt/vikunja/vikunja
+chmod +x "/opt/vikunja/vikunja"
+chown -R $app:www-data "/opt/vikunja/files"
 
 #=================================================
 # ADD A CONFIGURATION
 #=================================================
-ynh_script_progression --message="Adding a configuration file..." --weight=1
+#ynh_script_progression --message="Adding a configuration file..." --weight=1
 
-redis_db=$(ynh_redis_get_free_db)
-ynh_add_config --template="../conf/config.yml" --destination="/etc/vikunja/config.yml"
+# redis_db=$(ynh_redis_get_free_db)
+# ynh_add_config --template="../conf/config.yml" --destination="/etc/vikunja/config.yml"
 
 #chmod 600 "/etc/vikunja/config.yml"