diff --git a/conf/config.json.example b/conf/config.json.example
index 1b80da5..89d0d06 100644
--- a/conf/config.json.example
+++ b/conf/config.json.example
@@ -29,7 +29,7 @@
             "addGoogleAnalytics": false
         },
         "db": {
-            "username": "__DB_NAME__",
+            "username": "__DB_USER__",
             "password": "__DB_PWD__",
             "database": "__DB_NAME__",
             "host": "localhost",
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 6901352..3d61bd4 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -7,7 +7,7 @@
 # dependencies used by the app
 pkg_dependencies="postgresql apt-transport-https libssl-dev"
 
-nodejs_version=11
+nodejs_version=12
 
 #=================================================
 # PERSONAL HELPERS
diff --git a/scripts/install b/scripts/install
index 343d75d..b31def0 100644
--- a/scripts/install
+++ b/scripts/install
@@ -83,10 +83,10 @@ ynh_system_user_create --username=$app --home_dir="$final_path"
 ynh_script_progression --message="Creating a PostgreSQL database..." --weight=2
 
 db_name=$(ynh_sanitize_dbid --db_name=$app)
-db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)
+db_user=$db_name
 ynh_app_setting_set --app=$app --key=db_name --value=$db_name
 ynh_psql_test_if_first_run
-ynh_psql_setup_db --db_user=$db_name --db_name=$db_name
+ynh_psql_setup_db --db_user=$db_user --db_name=$db_name
 
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
@@ -125,14 +125,13 @@ popd
 #=================================================
 # ADD A CONFIGURATION
 #=================================================
-ynh_script_progression --message="Adding a configuration file..."
+ynh_script_progression --message="Modifying a config file..." --weight=1
 
-path=${path_url:1}
 ynh_add_config --template="../conf/config.json.example" --destination="$final_path/config.json"
-chmod 600 $final_path/config.json
 ynh_add_config --template="../conf/.sequelizerc.example" --destination="$final_path/.sequelizerc"
-chmod 600 $final_path/.sequelizerc
 
+chmod 600 $final_path/config.json
+chmod 600 $final_path/.sequelizerc
 chmod +x $final_path/app.js
 
 #=================================================
@@ -146,7 +145,7 @@ ynh_add_systemd_config
 #=================================================
 # INTEGRATE SERVICE IN YUNOHOST
 #=================================================
-ynh_script_progression --message="Integrating service in YunoHost..."
+ynh_script_progression --message="Integrating service in YunoHost..." --weight=1
 
 yunohost service add $app --description="Collaborative Markdown notes" --log="/var/log/$app/$app.log"
 
diff --git a/scripts/upgrade b/scripts/upgrade
index fc0480c..186b2b7 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -83,24 +83,24 @@ then
 	ynh_script_progression --message="Upgrading source files..." --weight=16
 
 	# Create a temporary directory
-	tmpdir="$(mktemp -d)"
+	#tmpdir="$(mktemp -d)"
 	
 	# Backup the config file in the temp dir
-	cp -a "$final_path/config.json" "$tmpdir/config.json"
-	cp -a "$final_path/.sequelizerc" "$tmpdir/.sequelizerc"
+	#cp -a "$final_path/config.json" "$tmpdir/config.json"
+	#cp -a "$final_path/.sequelizerc" "$tmpdir/.sequelizerc"
 	
 	# Remove the app directory securely
-	ynh_secure_remove --file=$final_path
+	#ynh_secure_remove --file=$final_path
 
 	# Download, check integrity, uncompress and patch the source from app.src
-	ynh_setup_source --dest_dir=$final_path
+	ynh_setup_source --dest_dir=$final_path --keep="$final_path/config.json $final_path/.sequelizerc"
 
 	#Copy the admin saved settings from tmp directory to final path	
-	cp -a "$tmpdir/config.json" "$final_path/config.json" 
-	cp -a "$tmpdir/.sequelizerc" "$final_path/.sequelizerc"
+	#cp -a "$tmpdir/config.json" "$final_path/config.json" 
+	#cp -a "$tmpdir/.sequelizerc" "$final_path/.sequelizerc"
 
 	# Remove the tmp directory securely
-	ynh_secure_remove --file="$tmpdir"
+	#ynh_secure_remove --file="$tmpdir"
 fi
 
 chmod 750 "$final_path"