diff --git a/check_process b/check_process
index f2f497d..219b38c 100644
--- a/check_process
+++ b/check_process
@@ -8,7 +8,7 @@
 	; Checks
 		pkg_linter=1
 		setup_sub_dir=1
-		setup_root=1
+		setup_root=0
 		setup_nourl=0
 		setup_private=1
 		setup_public=1
diff --git a/conf/nginx.conf b/conf/nginx.conf
index 985eb61..a49a1ca 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -3,7 +3,7 @@ location __PATH__/ {
 	index index.php;
 
 	if ($scheme = http) {
-		rewrite ^ https://$server_name$request_uri? permanent;
+	rewrite ^ https://$server_name$request_uri? permanent;
 	}
 
 	# The seemingly weird syntax is due to a long-standing bug in nginx,
@@ -12,10 +12,10 @@ location __PATH__/ {
 
 	# Another alternative to the weird try_files is to use a rewrite, like this :
 	#
-	#   if (-f $request_filename) {
+	#   if (-f $request_filename) {
 	#      break;
 	#   }
-	#   rewrite (.*) __PATH__/index.php$request_uri;
+	#   rewrite (.*) {LOCATION}/index.php$request_uri;
 	#
 	# But remember that if-is-evil :
 	#   https://www.nginx.com/resources/wiki/start/topics/tutorials/config_pitfalls/#check-if-file-exists
@@ -37,3 +37,6 @@ location __PATH__/ {
 	# Include SSOWAT user panel.
 	include conf.d/yunohost_panel.conf.inc;
 }
+
+# append trailing slash in case of a subpath
+location = __PATH__ { return 302 __PATH__/; }
diff --git a/scripts/backup b/scripts/backup
index eb67ce2..b2c5ea4 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -10,7 +10,7 @@ source /usr/share/yunohost/helpers
 ynh_abort_if_errors
 
 # Set app specific variables
-app="$YNH_APP_INSTANCE_NAME"
+app=$YNH_APP_INSTANCE_NAME
 dbname=$app
 dbuser=$app
 
@@ -20,12 +20,13 @@ path=$(ynh_app_setting_get "$app" path)
 dbpass=$(ynh_app_setting_get "$app" mysqlpwd)
 
 # Copy the app files
-DESTDIR="/var/www/$app"
-ynh_backup "$DESTDIR" "sources"
+final_path="/var/www/$app"
+ynh_backup "$final_path"
 
 # Copy the conf files
-ynh_backup "/etc/nginx/conf.d/${domain}.d/${app}.conf" "nginx.conf"
-ynh_backup "/etc/php5/fpm/pool.d/${app}.conf" "php-fpm.conf"
+ynh_backup "/etc/nginx/conf.d/${domain}.d/${app}.conf"
+ynh_backup "/etc/php5/fpm/pool.d/${app}.conf"
 
 # Dump the database
 mysqldump -u "$dbuser" -p"$dbpass" --no-create-db "$dbname" > ./dump.sql
+ynh_backup ./dump.sql
diff --git a/scripts/install b/scripts/install
index bfac8f2..f07bd32 100644
--- a/scripts/install
+++ b/scripts/install
@@ -11,7 +11,7 @@ ynh_abort_if_errors
 
 # Retrieve arguments
 domain=$YNH_APP_ARG_DOMAIN
-path=$YNH_APP_ARG_PATH
+path_url=$YNH_APP_ARG_PATH
 language=$YNH_APP_ARG_LANGUAGE
 is_public=$YNH_APP_ARG_IS_PUBLIC
 
@@ -20,19 +20,19 @@ app=$YNH_APP_INSTANCE_NAME
 dbname=$app
 dbuser=$app
 
-path=$(ynh_normalize_url_path "$path")
+path_url=$(ynh_normalize_url_path "$path_url")
 
 # Set and store language
 language=${LANGUAGES[$language]}
 
 ynh_app_setting_set "$app" language "$language"
 ynh_app_setting_set "$app" is_public "$is_public"
-ynh_app_setting_set "$app" path "$path"
+ynh_app_setting_set "$app" path "$path_url"
 
 # Check web path availability
-ynh_webpath_available "$domain" "$path"
+ynh_webpath_available "$domain" "$path_url"
 # Register (book) web path
-ynh_webpath_register "$app" "$domain" "$path"
+ynh_webpath_register "$app" "$domain" "$path_url"
 
 # Define LOGDIR (create it later when user is created)
 LOGDIR=/var/log/$app
@@ -131,9 +131,9 @@ then
 	ynh_app_setting_set "$app" unprotected_uris "/"
 
 	# ynh panel is not needed
-	ynh_replace_string "	include conf.d/"  "	#include conf.d/"  "$nginx_conf"
+	ynh_replace_string "	include conf.d/"  "	#include conf.d/"  "$finalnginxconf"
 
-	ynh_store_file_checksum "$nginx_conf"
+	ynh_store_file_checksum "$finalnginxconf"
 fi
 
 # Reload services
diff --git a/scripts/remove b/scripts/remove
index 1532fdf..0500567 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -19,9 +19,10 @@ ynh_mysql_drop_user "$dbuser"
 domain=$(ynh_app_setting_get "$app" domain)
 
 # Delete app directory and configurations
-rm -rf "/var/www/${app}" "/var/log/${app}"
-rm -f "/etc/php5/fpm/pool.d/${app}.conf"
-[[ -n $domain ]] && rm -f "/etc/nginx/conf.d/${domain}.d/${app}.conf"
+ynh_secure_remove "/var/www/${app}"
+ynh_secure_remove "/var/log/${app}"
+ynh_remove_fpm_config
+ynh_remove_nginx_config
 
 # Remove metapackage and its dependencies
 ynh_remove_app_dependencies
diff --git a/scripts/restore b/scripts/restore
index 59b5100..ff768dc 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -16,30 +16,18 @@ dbuser=$app
 
 # Retrieve old app settings
 domain=$(ynh_app_setting_get "$app" domain)
-path=$(ynh_app_setting_get "$app" path)
+path_url=$(ynh_app_setting_get "$app" path)
 dbpass=$(ynh_app_setting_get "$app" mysqlpwd)
 
 # Check web path availability
-ynh_webpath_available "$domain" "$path"
+ynh_webpath_available "$domain" "$path_url"
 
 # Install dependencies
 ynh_install_app_dependencies "php5-cli"
 
 # Check destination directory
-DESTDIR="/var/www/$app"
-[[ -d $DESTDIR ]] && ynh_die \
-"The destination directory '$DESTDIR' already exists.\
- You should safely delete it before restoring this app."
-
-# Check configuration files
-nginx_conf="/etc/nginx/conf.d/${domain}.d/${app}.conf"
-[[ -f $nginx_conf ]] && ynh_die \
-"The NGINX configuration already exists at '${nginx_conf}'.
- You should safely delete it before restoring this app."
-phpfpm_conf="/etc/php5/fpm/pool.d/${app}.conf"
-[[ -f $phpfpm_conf ]] && ynh_die \
-"The PHP FPM configuration already exists at '${phpfpm_conf}'.
- You should safely delete it before restoring this app."
+final_path="/var/www/$app"
+ynh_restore_file "$final_path"
 
 # Check whether Baïkal or Radicale is installed
 if yunohost app list --installed -f baikal | grep -q id ; then
@@ -54,29 +42,26 @@ fi
 
 ynh_system_user_create "$app" "$final_path"
 
-# Restore the app files and set permissions
-cp -a ./sources "$DESTDIR"
-
 # Protect source code against modifications
-chown -hR root: "$DESTDIR"
+chown -hR root: "$final_path"
 
 # Only agendav user should write here
-chown -hR $app: "${DESTDIR}/web/var/cache/"{profiler,twig}
-chmod -R 750 "${DESTDIR}/web/var/cache/"{profiler,twig}
+chown -hR $app: "${final_path}/web/var/cache/"{profiler,twig}
+chmod -R 750 "${final_path}/web/var/cache/"{profiler,twig}
 
 # The agendav user should read here, but does not need to write
 # Other users should not be able to read as it stores passwords.
-find "${DESTDIR}/web/config" -type f -exec chown root:$app {} \; -exec chmod 640 {} \;
-find "${DESTDIR}/web/config" -type d -exec chown root:$app {} \; -exec chmod 750 {} \;
+find "${final_path}/web/config" -type f -exec chown root:$app {} \; -exec chmod 640 {} \;
+find "${final_path}/web/config" -type d -exec chown root:$app {} \; -exec chmod 750 {} \;
 
 # Clean caches
-rm -rf "${DESTDIR}/web/var/cache/"{profiler,twig}/*
+ynh_secure_remove "${final_path}/web/var/cache/"{profiler,twig}/*
 
 # CalDAV config
 caldav_domain=$(ynh_app_setting_get "$caldav_app" domain)
 caldav_path=$(ynh_app_setting_get "$caldav_app" path)
 caldav_url="https://${caldav_domain}${caldav_path%/}"
-conf_path="${DESTDIR}/web/config/settings.php"
+conf_path="${final_path}/web/config/settings.php"
 sed -i "s@^\(\$app\['caldav.baseurl'\] = \).*\
 @\1'${caldav_url}${caldav_baseurl}';@g" "$conf_path"
 sed -i "s@^\(\$app\['caldav.baseurl.public'\] = \).*\
@@ -90,8 +75,8 @@ ynh_mysql_create_db "$dbname" "$dbuser" "$dbpass"
 ynh_mysql_connect_as "$dbuser" "$dbpass" "$dbname" < ./dump.sql
 
 # Restore configuration files
-cp -a ./nginx.conf   "$nginx_conf"
-cp -a ./php-fpm.conf "$phpfpm_conf"
+ynh_restore_file "/etc/nginx/conf.d/${domain}.d/${app}.conf"
+ynh_restore_file "/etc/php5/fpm/pool.d/${app}.conf"
 
 # Reload services
 service php5-fpm restart
diff --git a/scripts/upgrade b/scripts/upgrade
index e540f74..ae137af 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -16,7 +16,7 @@ dbuser=$app
 
 # Retrieve arguments
 domain=$(ynh_app_setting_get "$app" domain)
-path=$(ynh_app_setting_get "$app" path)
+path_url=$(ynh_app_setting_get "$app" path)
 dbpass=$(ynh_app_setting_get "$app" mysqlpwd)
 encryptkey=$(ynh_app_setting_get "$app" encryptkey)
 language=$(ynh_app_setting_get "$app" language)
@@ -38,9 +38,6 @@ LOGDIR=/var/log/$app
 
 # Check destination directory
 final_path=/var/www/$app
-test ! -e "$final_path" || ynh_die "This path already contains a folder"
-
-mkdir -p "$final_path"
 
 # Check whether Baïkal or Radicale is installed
 baikal_install=$(agendav_app_check_installation "baikal")
@@ -122,9 +119,9 @@ then
 	ynh_app_setting_set "$app" unprotected_uris "/"
 
 	# ynh panel is not needed
-	ynh_replace_string "	include conf.d/"  "	#include conf.d/"  "$nginx_conf"
+	ynh_replace_string "	include conf.d/"  "	#include conf.d/"  "$finalnginxconf"
 
-	ynh_store_file_checksum "$nginx_conf"
+	ynh_store_file_checksum "$finalnginxconf"
 fi
 
 # Reload services