diff --git a/conf/cheky.cron b/conf/cron
similarity index 100%
rename from conf/cheky.cron
rename to conf/cron
diff --git a/scripts/install b/scripts/install
index 86e9792..99bce2b 100644
--- a/scripts/install
+++ b/scripts/install
@@ -30,64 +30,66 @@ app=$YNH_APP_INSTANCE_NAME
 #=================================================
 # CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
 #=================================================
-ynh_print_info "Validating installation parameters..."
+ynh_script_progression --message="Validating installation parameters..."
 
 final_path=/var/www/$app
-test ! -e "$final_path" || ynh_die "This path already contains a folder"
-
-# Normalize the url path syntax
-path_url=$(ynh_normalize_url_path $path_url)
+test ! -e "$final_path" || ynh_die --message="This path already contains a folder"
 
 # Register (book) web path
-ynh_webpath_register $app $domain $path_url
+ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url
 
 #=================================================
 # STORE SETTINGS FROM MANIFEST
 #=================================================
-ynh_print_info "Storing installation settings..."
+ynh_script_progression --message="Storing installation settings..."
 
-ynh_app_setting_set $app domain $domain
-ynh_app_setting_set $app path $path_url
-ynh_app_setting_set $app password $password
+ynh_app_setting_set --app=$app --key=domain --value=$domain
+ynh_app_setting_set --app=$app --key=path --value=$path_url
+ynh_app_setting_set --app=$app --key=password --value=$password
+
+#=================================================
+# CREATE DEDICATED USER
+#=================================================
+ynh_script_progression --message="Configuring system user..."
+
+# Create a system user
+ynh_system_user_create --username=$app --home_dir="$final_path"
 
 #=================================================
 # CREATE A MYSQL DATABASE
 #=================================================
-ynh_print_info "Creating a MySQL database..."
+ynh_script_progression --message="Creating a MySQL database..."
 
-db_name=$(ynh_sanitize_dbid $app)
-ynh_app_setting_set $app db_name $db_name
-ynh_mysql_setup_db $db_name $db_name
+db_name=$(ynh_sanitize_dbid --db_name=$app)
+db_user=$db_name
+ynh_app_setting_set --app=$app --key=db_name --value=$db_name
+ynh_mysql_setup_db --db_user=$db_user --db_name=$db_name
 
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
-ynh_print_info "Setting up source files..."
+ynh_script_progression --message="Setting up source files..."
 
-ynh_app_setting_set $app final_path $final_path
+ynh_app_setting_set --app=$app --key=final_path --value=$final_path
 # Download, check integrity, uncompress and patch the source from app.src
-ynh_setup_source "$final_path"
+ynh_setup_source --dest_dir="$final_path"
+
+chmod 750 "$final_path"
+chmod -R o-rwx "$final_path"
+chown -R $app:www-data "$final_path"
 
 #=================================================
 # NGINX CONFIGURATION
 #=================================================
-ynh_print_info "Configuring nginx web server..."
+ynh_script_progression --message="Configuring NGINX web server..."
 
 # Create a dedicated nginx config
 ynh_add_nginx_config
 
-#=================================================
-# CREATE DEDICATED USER
-#=================================================
-ynh_print_info "Configuring system user..."
-
-# Create a system user
-ynh_system_user_create $app
-
 #=================================================
 # PHP-FPM CONFIGURATION
 #=================================================
-ynh_print_info "Configuring php-fpm..."
+ynh_script_progression --message="Configuring PHP-FPM..."
 
 # Create a dedicated php-fpm config
 ynh_add_fpm_config
@@ -97,31 +99,21 @@ ynh_add_fpm_config
 #=================================================
 # Add cron job
 #=================================================
-ynh_print_info "Configuring a cron task..."
+ynh_script_progression --message="Configuring a cron task..."
 
-# Path where crontab will be installed
-cron_path="/etc/cron.d/$app"
-
-# Copy crontab from package to Yunohost
-cp -a ../conf/cheky.cron "$cron_path"
-
-# Secure crontab
-chown root: "$cron_path"
-chmod 644 "$cron_path"
-
-# Configure crontab
-ynh_replace_string "__USER__"      "$app"        "$cron_path"
-ynh_replace_string "__FINALPATH__" "$final_path" "$cron_path"
+ynh_add_config --template="../conf/cron" --destination="/etc/cron.d/$app"
+chown root: "/etc/cron.d/$app"
+chmod 644 "/etc/cron.d/$app"
 
 #=================================================
 # SETUP APPLICATION WITH CURL
 #=================================================
 
 # Set right permissions for curl install
-chown -R $app: $final_path
+chown -R $app $final_path
 
 # Set the app as temporarily public for curl call
-ynh_script_progression --message="Configuring SSOwat..."
+ynh_script_progression --message="Configuring permissions..."
 # Making the app public for curl
 ynh_permission_update --permission="main" --add="visitors"
 
@@ -129,7 +121,7 @@ ynh_permission_update --permission="main" --add="visitors"
 systemctl reload nginx
 
 # Installation with curl
-ynh_print_info "Finalizing installation..."
+ynh_script_progression --message="Finalizing installation..."
 # Get database password
 db_pwd=$(ynh_app_setting_get $app mysqlpwd)
 ynh_local_curl "/index.php?mod=install" "password=$password" "confirmPassword=$password" "type=db" "db[host]=localhost" "db[user]=$db_name" "db[password]=$db_pwd" "db[dbname]=$db_name"
@@ -137,23 +129,10 @@ ynh_local_curl "/index.php?mod=install" "password=$password" "confirmPassword=$p
 # Remove the public access
 ynh_permission_update --permission="main" --remove="visitors"
 
-#=================================================
-# GENERIC FINALIZATION
-#=================================================
-# SECURE FILES AND DIRECTORIES
-#=================================================
-
-# Set permissions to app files
-chown -R root: $final_path
-
-# Folders that needs to be writable by cheky
-chown -R $app: $final_path/var                    # requirement in official documentation
-chown -R $app: $final_path/static/media/annonce   # needed for "Mes annonces sauvegardées" tab
-
 #=================================================
 # SETUP SSOWAT
 #=================================================
-ynh_print_info "Configuring SSOwat..."
+ynh_script_progression --message="Configuring permissions..."
 
 # Make app public if necessary
 if [ $is_public -eq 1 ]
@@ -164,12 +143,12 @@ fi
 #=================================================
 # RELOAD NGINX
 #=================================================
-ynh_print_info "Reloading nginx web server..."
+ynh_script_progression --message="Reloading NGINX web server..."
 
-systemctl reload nginx
+ynh_systemd_action --service_name=nginx --action=reload
 
 #=================================================
 # END OF SCRIPT
 #=================================================
 
-ynh_print_info "Installation of $app completed"
+ynh_script_progression --message="Installation of $app completed"