diff --git a/check_process b/check_process
index cabe4db..6c69fb0 100644
--- a/check_process
+++ b/check_process
@@ -13,6 +13,6 @@
 		setup_public=0
 		upgrade=1
 		backup_restore=1
-		multi_instance=1
+		multi_instance=0
 		port_already_use=0
 		change_url=0
diff --git a/manifest.json b/manifest.json
index 7b385a5..3470992 100644
--- a/manifest.json
+++ b/manifest.json
@@ -3,7 +3,8 @@
     "id": "yunomonitor",
     "packaging_format": 1,
     "description": {
-        "en": "Home made tool to monitor automatically your servers."
+        "en": "Home made tool to monitor automatically your servers",
+        "fr": "Outil pour surveiller automatiquement vos serveurs"
     },
     "version": "1.1.0~ynh1",
     "url": "https://github.com/zamentur/yunomonitor",
@@ -14,9 +15,9 @@
         "url": "https://reflexlibre.net"
     },
     "requirements": {
-        "yunohost": ">= 3.6"
+        "yunohost": ">= 4.2.0"
     },
-    "multi_instance": true,
+    "multi_instance": false,
     "services": [
         "nginx"
     ],
diff --git a/scripts/backup b/scripts/backup
index cc652a5..5c0d111 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -20,7 +20,7 @@ ynh_abort_if_errors
 #=================================================
 # LOAD SETTINGS
 #=================================================
-ynh_script_progression --message="Loading installation settings..." --time --weight=1
+ynh_print_info --message="Loading installation settings..."
 
 app=$YNH_APP_INSTANCE_NAME
 
@@ -28,20 +28,19 @@ final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 domain=$(ynh_app_setting_get --app=$app --key=domain)
 
 #=================================================
-# STANDARD BACKUP STEPS
+# DECLARE DATA AND CONF FILES TO BACKUP
 #=================================================
+ynh_print_info --message="Declaring files to be backed up..."
 
 #=================================================
 # BACKUP THE APP MAIN DIR
 #=================================================
-ynh_script_progression --message="Backing up the main app directory..." --time --weight=1
 
 ynh_backup --src_path="$final_path"
 
 #=================================================
 # BACKUP THE NGINX CONFIGURATION
 #=================================================
-ynh_script_progression --message="Backing up nginx web server configuration..." --time --weight=1
 
 ynh_backup --src_path="/etc/nginx/conf.d/$domain.d/000-$app.conf"
 
@@ -50,7 +49,6 @@ ynh_backup --src_path="/etc/nginx/conf.d/$domain.d/000-$app.conf"
 #=================================================
 # BACKUP SYSTEMD
 #=================================================
-ynh_script_progression --message="Backing up systemd configuration..." --time --weight=1
 
 ynh_backup --src_path="/etc/systemd/system/$app.service"
 
@@ -64,4 +62,4 @@ ynh_backup --src_path="/etc/systemd/system/$app.timer"
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Backup script completed for $app. (YunoHost will then actually copy those files to the archive)." --time --last
+ynh_print_info --message="Backup script completed for $app. (YunoHost will then actually copy those files to the archive)."
diff --git a/scripts/install b/scripts/install
index 37c4b28..9cee96a 100755
--- a/scripts/install
+++ b/scripts/install
@@ -92,12 +92,14 @@ ynh_system_user_create --username=$app
 #=================================================
 # CONFIGURE SYSTEMD TIMER
 #=================================================
+
 ynh_add_systemd_config
 cp ../conf/systemd.timer "/etc/systemd/system/$app.timer"
 ynh_replace_string --match_string="__APP__" --replace_string="$app" --target_file="/etc/systemd/system/$app.timer"
 systemctl daemon-reload
-systemctl enable $app.timer
+systemctl enable $app.timer --quiet
 systemctl start $app.timer
+
 #=================================================
 
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index 2a2c359..645510d 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -75,8 +75,8 @@ chmod u+x $final_path/yunomonitor.py
 ynh_script_progression --message="Activating systemd timer..." --weight=1
 
 systemctl daemon-reload
-systemctl enable $app.service
-systemctl enable $app.timer
+systemctl enable $app.service --quiet
+systemctl enable $app.timer --quiet
 systemctl start $app.timer
 
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index e0b2288..baa2dfd 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -115,7 +115,6 @@ ynh_backup_if_checksum_is_different --file="$final_path/conf/$app.yml"
 # Recalculate and store the checksum of the file for the next upgrade.
 ynh_store_file_checksum --file="$final_path/conf/$app.yml"
 
-
 #=================================================
 # GENERIC FINALIZATION
 #=================================================