diff --git a/README.md b/README.md
index 7c16d56..4278ed1 100644
--- a/README.md
+++ b/README.md
@@ -54,3 +54,17 @@ Have a look to the [security audit](https://defuse.ca/audits/encfs.htm) to have
  * Report a bug: https://github.com/YunoHost-Apps/archivist_ynh/issues
  * archivist website: https://github.com/maniackcrudelis/archivist
  * YunoHost website: https://yunohost.org/
+
+---
+
+Developers infos
+----------------
+
+Please do your pull request to the [testing branch](https://github.com/YunoHost-Apps/archivist_ynh/tree/testing).
+
+To try the testing branch, please proceed like that.
+```
+sudo yunohost app install https://github.com/YunoHost-Apps/archivist_ynh/tree/testing --force --debug
+or
+sudo yunohost app upgrade archivist -u https://github.com/YunoHost-Apps/archivist_ynh/tree/testing --debug
+```
diff --git a/README_fr.md b/README_fr.md
index 2689159..2751c44 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -56,3 +56,17 @@ Consultez l'[audit de sécurité](https://defuse.ca/audits/encfs.htm) pour avoir
  * Reporter un bug: https://github.com/YunoHost-Apps/archivist_ynh/issues
  * Site de archivist: https://github.com/maniackcrudelis/archivist
  * Site de YunoHost: https://yunohost.org/
+
+---
+
+Informations à l'intention des développeurs
+----------------
+
+Merci de faire vos pull request sur la [branche testing](https://github.com/YunoHost-Apps/archivist_ynh/tree/testing).
+
+Pour tester la branche testing, merci de procéder ainsi.
+```
+sudo yunohost app install https://github.com/YunoHost-Apps/archivist_ynh/tree/testing --force --debug
+ou
+sudo yunohost app upgrade archivist -u https://github.com/YunoHost-Apps/archivist_ynh/tree/testing --debug
+```
diff --git a/scripts/actions/clean_backups b/scripts/actions/clean_backups
index 56a1f76..c13256d 100755
--- a/scripts/actions/clean_backups
+++ b/scripts/actions/clean_backups
@@ -20,7 +20,7 @@ ynh_abort_if_errors
 # RETRIEVE ARGUMENTS
 #=================================================
 
-app=${YNH_APP_INSTANCE_NAME:-$YNH_APP_ID}
+app=$YNH_APP_INSTANCE_NAME
 
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 
diff --git a/scripts/actions/force_backup b/scripts/actions/force_backup
index bde2993..fdbb7ed 100755
--- a/scripts/actions/force_backup
+++ b/scripts/actions/force_backup
@@ -20,7 +20,7 @@ ynh_abort_if_errors
 # RETRIEVE ARGUMENTS
 #=================================================
 
-app=${YNH_APP_INSTANCE_NAME:-$YNH_APP_ID}
+app=$YNH_APP_INSTANCE_NAME
 
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 
diff --git a/scripts/actions/reset_default_config b/scripts/actions/reset_default_config
index 891151e..9647d3c 100755
--- a/scripts/actions/reset_default_config
+++ b/scripts/actions/reset_default_config
@@ -20,7 +20,7 @@ ynh_abort_if_errors
 # RETRIEVE ARGUMENTS
 #=================================================
 
-app=${YNH_APP_INSTANCE_NAME:-$YNH_APP_ID}
+app=$YNH_APP_INSTANCE_NAME
 
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 encrypt=$(ynh_app_setting_get --app=$app --key=encrypt)
diff --git a/scripts/backup b/scripts/backup
index 3555225..180eabc 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -46,6 +46,7 @@ ynh_backup --src_path="/etc/logrotate.d/$app"
 #=================================================
 # BACKUP THE CRON FILE
 #=================================================
+ynh_script_progression --message="Backing up cron file..."
 
 ynh_backup --src_path="/etc/cron.d/$app"
 
diff --git a/scripts/config b/scripts/config
index 838e446..5c78fe0 100644
--- a/scripts/config
+++ b/scripts/config
@@ -13,7 +13,7 @@ source /usr/share/yunohost/helpers
 # RETRIEVE ARGUMENTS
 #=================================================
 
-app=${YNH_APP_INSTANCE_NAME:-$YNH_APP_ID}
+app=$YNH_APP_INSTANCE_NAME
 
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)