diff --git a/README.md b/README.md
index 460516a..98bd5ef 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # YesWiki for YunoHost
 
 [![Integration level](https://dash.yunohost.org/integration/yeswiki.svg)](https://dash.yunohost.org/appci/app/yeswiki) ![](https://ci-apps.yunohost.org/ci/badges/yeswiki.status.svg) ![](https://ci-apps.yunohost.org/ci/badges/yeswiki.maintain.svg)  
-[![Install YesWiki with YunoHost](https://install-app.yunohost.org/install-with-yunohost.png)](https://install-app.yunohost.org/?app=yeswiki)
+[![Install YesWiki with YunoHost](https://install-app.yunohost.org/install-with-yunohost.svg)](https://install-app.yunohost.org/?app=yeswiki)
 
 *[Lire ce readme en français.](./README_fr.md)*
 
diff --git a/README_fr.md b/README_fr.md
index bdf6ddf..39f47b2 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -1,7 +1,7 @@
 # YesWiki pour YunoHost
 
 [![Niveau d'intégration](https://dash.yunohost.org/integration/yeswiki.svg)](https://dash.yunohost.org/appci/app/yeswiki) ![](https://ci-apps.yunohost.org/ci/badges/yeswiki.status.svg) ![](https://ci-apps.yunohost.org/ci/badges/yeswiki.maintain.svg)  
-[![Installer YesWiki avec YunoHost](https://install-app.yunohost.org/install-with-yunohost.png)](https://install-app.yunohost.org/?app=yeswiki)
+[![Installer YesWiki avec YunoHost](https://install-app.yunohost.org/install-with-yunohost.svg)](https://install-app.yunohost.org/?app=yeswiki)
 
 *[Read this readme in english.](./README.md)*
 
diff --git a/check_process b/check_process
index 46791c2..5e7f084 100644
--- a/check_process
+++ b/check_process
@@ -31,13 +31,10 @@
 		change_url=1
 		actions=0
 		config_panel=0
-;;; Levels
-	# If the level 5 (Package linter) is forced to 1. Please add justifications here.
-	Level 5=auto
 ;;; Options
 Email=
 Notification=change
 ;;; Upgrade options
 	; commit=e530bfcf7508e42be1b73ff0dcac8ed72428381b
-		name=Name of this previous version
+		name=Merge pull request #19 from YunoHost-Apps/testing
 		manifest_arg=domain=DOMAIN&path=PATH&admin=USER&password=password&is_public=1&
diff --git a/conf/nginx.conf b/conf/nginx.conf
index 37de41d..556b622 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -9,7 +9,6 @@ location __PATH__/ {
     rewrite ^ https://$server_name$request_uri? permanent;
   }
 
-### Example PHP configuration (remove it if not used)
   index index.php;
 
   # Common parameter to increase upload size limit in conjunction with dedicated php-fpm file
@@ -26,7 +25,6 @@ location __PATH__/ {
     fastcgi_param PATH_INFO $fastcgi_path_info;
     fastcgi_param SCRIPT_FILENAME $request_filename;
   }
-### End of PHP configuration part
 
   # Include SSOWAT user panel.
   include conf.d/yunohost_panel.conf.inc;
diff --git a/manifest.json b/manifest.json
index 8228627..7345d5d 100644
--- a/manifest.json
+++ b/manifest.json
@@ -15,7 +15,7 @@
         "url": "https://www.plumf.eu"
     },
     "requirements": {
-        "yunohost": ">= 3.8.1"
+        "yunohost": ">= 4.1.2"
     },
     "multi_instance": true,
     "services": [
diff --git a/pull_request_template.md b/pull_request_template.md
index 7f07956..6c28fc5 100644
--- a/pull_request_template.md
+++ b/pull_request_template.md
@@ -13,6 +13,4 @@
 
 ## Package_check results
 ---
-*If you have access to [App Continuous Integration for packagers](https://yunohost.org/#/packaging_apps_ci) you can provide a link to the package_check results like below, replacing '-NUM-' in this link by the PR number and USERNAME by your username on the ci-apps-dev. Or you provide a screenshot or a pastebin of the results*
-
-[![Build Status](https://ci-apps-dev.yunohost.org/jenkins/job/yeswiki_ynh%20PR-NUM-%20(USERNAME)/badge/icon)](https://ci-apps-dev.yunohost.org/jenkins/job/yeswiki_ynh%20PR-NUM-%20(USERNAME)/)  
+* An automatic package_check will be launch at https://ci-apps-dev.yunohost.org/, when you add a specific comment to your Pull Request: "!testme", "!gogogadgetoci" or "By the power of systemd, I invoke The Great App CI to test this Pull Request!"*
diff --git a/scripts/change_url b/scripts/change_url
index c1c2431..a30b761 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -29,11 +29,6 @@ ynh_script_progression --message="Loading installation settings..." --weight=1
 # Needed for helper "ynh_add_nginx_config"
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 
-# Add settings here as needed by your application
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
-db_user=$db_name
-db_pwd=$(ynh_app_setting_get --app=$app --key=db_pwd)
-
 #=================================================
 # BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
 #=================================================
diff --git a/scripts/install b/scripts/install
index 65b37f7..6b7513d 100755
--- a/scripts/install
+++ b/scripts/install
@@ -52,9 +52,6 @@ ynh_script_progression --message="Storing installation settings..." --weight=1
 ynh_app_setting_set --app=$app --key=domain --value=$domain
 ynh_app_setting_set --app=$app --key=path --value=$path_url
 ynh_app_setting_set --app=$app --key=admin --value=$admin
-ynh_app_setting_set --app=$app --key=is_public --value=$is_public
-#ynh_app_setting_set --app=$app --key=wiki_name --value=$wiki_name
-
 ynh_app_setting_set --app=$app --key=language --value=$language
 
 #=================================================
@@ -100,7 +97,7 @@ ynh_system_user_create --username=$app
 ynh_script_progression --message="Configuring PHP-FPM..." --weight=8
 
 # Create a dedicated PHP-FPM config
-ynh_add_fpm_config --phpversion=$YNH_PHP_VERSION --package="$extra_php_dependencies"
+ynh_add_fpm_config --package="$extra_php_dependencies"
 phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
 
 #=================================================
@@ -112,15 +109,10 @@ phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
 # Set right permissions for cURL install
 chown -R $app: $final_path
 
-# Set the app as temporarily public for curl call
-ynh_script_progression --message="Configuring SSOwat..." --weight=2
+# Set the app as temporarily public for cURL call
+ynh_permission_update --permission="main" --add="visitors"
 
-ynh_permission_update --permission main --remove all_users --add visitors
-
-# Reload SSOwat config
-yunohost app ssowatconf
-
-# Reload Nginx
+# Reload NGINX
 ynh_systemd_action --service_name=nginx --action=reload
 
 # Installation with curl
@@ -139,12 +131,6 @@ ynh_local_curl "/?PagePrincipale&installAction=install" "config[default_language
 # authorization of html
 ynh_replace_string --match_string="'allow_raw_html' => false," --replace_string="'allow_raw_html' => true," --target_file="$final_path/wakka.config.php"
 
-# Remove the public access
-if [ $is_public -eq 0 ]
-then
-	ynh_permission_update --permission main --remove visitors --add all_users
-fi
-
 #=================================================
 # DOWNLOAD AND CONFIGURE LDAP PLUGIN
 #=================================================
@@ -182,15 +168,18 @@ ynh_replace_string --match_string=");"\
 chown -R root: $final_path
 chown -R $app $final_path/{cache,files,themes,tools,wakka.config.php}
 
+chown $app:www-data $final_path
+chmod o-rwx $final_path
+
 #=================================================
 # SETUP SSOWAT
 #=================================================
-ynh_script_progression --message="Configuring SSOwat..." --weight=1
+ynh_script_progression --message="Configuring permissions..." --weight=1
 
-# Make app public if necessary
-if [ $is_public -eq 1 ]
+# Make app public if necessary or protect it
+if [ $is_public -eq 0 ]
 then
-	ynh_permission_update --permission main --add visitors
+	ynh_permission_update --permission="main" --remove="visitors"
 fi
 
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index 5116ebe..63cdb87 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -75,6 +75,9 @@ ynh_system_user_create --username=$app
 chown -R root: $final_path
 chown -R $app $final_path/{cache,files,themes,tools,wakka.config.php}
 
+chown $app:www-data $final_path
+chmod o-rwx $final_path
+
 #=================================================
 # RESTORE THE PHP-FPM CONFIGURATION
 #=================================================
@@ -82,7 +85,7 @@ ynh_script_progression --message="Reconfiguring PHP-FPM..." --weight=11
 
 ynh_restore_file --origin_path="/etc/php/$phpversion/fpm/pool.d/$app.conf"
 
-ynh_add_fpm_config --phpversion=$YNH_PHP_VERSION --package="$extra_php_dependencies"
+ynh_add_fpm_config --package="$extra_php_dependencies"
 
 #=================================================
 # SPECIFIC RESTORATION
@@ -109,4 +112,4 @@ ynh_systemd_action --service_name=nginx --action=reload
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Restoration completed for YesWiki" --last
\ No newline at end of file
+ynh_script_progression --message="Restoration completed for YesWiki" --last
diff --git a/scripts/upgrade b/scripts/upgrade
index c83fea1..9ceaf98 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -19,7 +19,6 @@ app=$YNH_APP_INSTANCE_NAME
 domain=$(ynh_app_setting_get --app=$app --key=domain)
 path_url=$(ynh_app_setting_get --app=$app --key=path)
 admin=$(ynh_app_setting_get --app=$app --key=admin)
-is_public=$(ynh_app_setting_get --app=$app --key=is_public)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 language=$(ynh_app_setting_get --app=$app --key=language)
 db_name=$(ynh_app_setting_get --app=$app --key=db_name)
@@ -36,15 +35,6 @@ upgrade_type=$(ynh_check_app_version_changed)
 #=================================================
 ynh_script_progression --message="Ensuring downward compatibility..." --weight=1
 
-# Fix is_public as a boolean value
-if [ "$is_public" = "Yes" ]; then
-	ynh_app_setting_set --app=$app --key=is_public --value=1
-	is_public=1
-elif [ "$is_public" = "No" ]; then
-	ynh_app_setting_set --app=$app --key=is_public --value=0
-	is_public=0
-fi
-
 # If db_name doesn't exist, create it
 if [ -z "$db_name" ]; then
 	db_name=$(ynh_sanitize_dbid --db_name=$app)
@@ -57,6 +47,13 @@ if [ -z "$final_path" ]; then
 	ynh_app_setting_set --app=$app --key=final_path --value=$final_path
 fi
 
+# Cleaning legacy permissions
+if ynh_legacy_permissions_exists; then
+	ynh_legacy_permissions_delete_all
+
+	ynh_app_setting_delete --app=$app --key=is_public
+fi
+
 #=================================================
 # BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
 #=================================================
@@ -141,7 +138,7 @@ ynh_system_user_create --username=$app
 ynh_script_progression --message="Upgrading PHP-FPM configuration..." --weight=5
 
 # Create a dedicated PHP-FPM config
-ynh_add_fpm_config --phpversion=$YNH_PHP_VERSION --package="$extra_php_dependencies"
+ynh_add_fpm_config --package="$extra_php_dependencies"
 
 #=================================================
 # GENERIC FINALIZATION
@@ -153,16 +150,8 @@ ynh_add_fpm_config --phpversion=$YNH_PHP_VERSION --package="$extra_php_dependenc
 chown -R root: $final_path
 chown -R $app $final_path/{cache,files,themes,tools,wakka.config.php}
 
-#=================================================
-# SETUP SSOWAT
-#=================================================
-ynh_script_progression --message="Upgrading SSOwat configuration..." --weight=1
-# Make app public if necessary
-#if [ $is_public -eq 1 ]
-#then
-	# unprotected_uris allows SSO credentials to be passed anyway
-	#ynh_permission_update --permission main --remove all_users --add visitors 
-#fi
+chown $app:www-data $final_path
+chmod o-rwx $final_path
 
 #=================================================
 # RELOAD NGINX