diff --git a/manifest.json b/manifest.json
index 00cadcb..a12dabd 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "A 2048 variant with Euro coins and notes.",
         "fr": "Une variante 2048 avec pièces et billets en euros."
     },
-    "version": "1.0~ynh3",
+    "version": "1.0~ynh4",
     "url": "https://github.com/jatekos101/20euros",
     "license": "MIT",
     "maintainer": {
@@ -14,7 +14,7 @@
         "email": ""
     },
     "requirements": {
-        "yunohost": ">= 4.0.0"
+        "yunohost": ">= 4.1.7"
     },
     "multi_instance": true,
     "services": [
@@ -25,29 +25,17 @@
             {
                 "name": "domain",
                 "type": "domain",
-                "ask": {
-                    "en": "Choose a domain for 20 euros",
-                    "fr": "Choisissez un nom de domaine pour 20 euros"
-                },
                 "example": "domain.org"
             },
             {
                 "name": "path",
                 "type": "path",
-                "ask": {
-                    "en": "Choose a path for 20 euros",
-                    "fr": "Choisissez un chemin pour 20 euros"
-                },
                 "example": "/20euros",
                 "default": "/20euros"
             },
             {
                 "name": "is_public",
                 "type": "boolean",
-                "ask": {
-                    "en": "Is it a public game?",
-                    "fr": "Est-ce un jeu public ?"
-                },
                  "help": {
                         "en": "If enabled, 20 euros will be accessible by people who doesn’t have an account. This can be changed later via the webadmin.",
                         "fr": "Si cette case est cochée, 20 euros sera accessible aux personnes n’ayant pas de compte. Vous pourrez changer ceci plus tard via la webadmin."
diff --git a/scripts/change_url b/scripts/change_url
index 8a3e46b..183c971 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -7,7 +7,6 @@
 #=================================================
 
 source /usr/share/yunohost/helpers
-
 ynh_abort_if_errors
 
 #=================================================
diff --git a/scripts/install b/scripts/install
index beb9911..024573c 100755
--- a/scripts/install
+++ b/scripts/install
@@ -42,9 +42,8 @@ ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url
 #=================================================
 ynh_script_progression --message="Storing installation settings..." --weight=2
 
-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=$app --key=is_public --value=$is_public
+ynh_app_setting_set --app=$app --key=domain --value=$domain
+ynh_app_setting_set --app=$app --key=path   --value=$path_url
 
 #=================================================
 # STANDARD MODIFICATIONS
diff --git a/scripts/upgrade b/scripts/upgrade
index 3ffc386..cf43934 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -17,7 +17,6 @@ app=$YNH_APP_INSTANCE_NAME
 
 domain=$(ynh_app_setting_get --app=$app --key=domain)
 path_url=$(ynh_app_setting_get --app=$app --key=path)
-is_public=$(ynh_app_setting_get --app=$app --key=is_public)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 
 #=================================================
@@ -31,21 +30,19 @@ 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 final_path doesn't exist, create it
 if [ -z "$final_path" ]; then
 	final_path=/var/www/$app
 	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
 #=================================================