diff --git a/scripts/install b/scripts/install
index 34ada06..9a09575 100644
--- a/scripts/install
+++ b/scripts/install
@@ -148,8 +148,6 @@ ynh_script_progression --message="Configuring log rotation..."
 # Create log directory
 mkdir -p /var/log/$app
 touch /var/log/$app/etherpad.log
-install_log=/var/log/$app/installation.log
-touch $install_log
 chown $app -R /var/log/$app
 
 #=================================================
@@ -185,8 +183,12 @@ fi
 ynh_store_file_checksum --file="$final_path/settings.json"
 
 ynh_add_config --template="../conf/credentials.json" --destination="$final_path/credentials.json"
-# Restrict access to credentials.json
-chmod 600 $final_path/credentials.json
+
+chmod 600 "$final_path/settings.json"
+chown $app:$app "$final_path/settings.json"
+
+chmod 600 "$final_path/credentials.json"
+chown $app:$app "$final_path/credentials.json"
 
 #=================================================
 # SETUP SYSTEMD
diff --git a/scripts/restore b/scripts/restore
index d7c560c..6a72769 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -45,22 +45,8 @@ ynh_script_progression --message="Validating restoration parameters..."
 test ! -d $final_path \
 	|| ynh_die --message="There is already a directory: $final_path "
 
-#=================================================
-# ACTIVATE MAINTENANCE MODE
-#=================================================
-ynh_script_progression --message="Activating maintenance mode..." --weight=2
-
-ynh_maintenance_mode_ON
-
 #=================================================
 # STANDARD RESTORATION STEPS
-#=================================================
-# RESTORE THE NGINX CONFIGURATION
-#=================================================
-ynh_script_progression --message="Restoring the NGINX web server configuration..."
-
-ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
-
 #=================================================
 # RECREATE THE DEDICATED USER
 #=================================================
@@ -80,28 +66,21 @@ chmod 750 "$final_path"
 chmod -R o-rwx "$final_path"
 chown -R $app:$app "$final_path"
 
+chmod 600 "$final_path/settings.json"
+chown $app:$app "$final_path/settings.json"
+
+chmod 600 "$final_path/credentials.json"
+chown $app:$app "$final_path/credentials.json"
+
 #=================================================
 # RESTORE FAIL2BAN CONFIGURATION
 #=================================================
 ynh_script_progression --message="Restoring the Fail2Ban configuration..." --weight=6
 
-ynh_restore_file "/etc/fail2ban/jail.d/$app.conf"
-ynh_restore_file "/etc/fail2ban/filter.d/$app.conf"
+ynh_restore_file --origin_path="/etc/fail2ban/jail.d/$app.conf"
+ynh_restore_file --origin_path="/etc/fail2ban/filter.d/$app.conf"
 ynh_systemd_action --action=restart --service_name=fail2ban
 
-#=================================================
-# SPECIFIC RESTORE
-#=================================================
-# HANDLE LOG FILES AND LOGROTATE
-#=================================================
-
-mkdir -p /var/log/$app
-touch /var/log/$app/etherpad.log
-install_log=/var/log/$app/installation.log
-touch $install_log
-chown $app -R /var/log/$app
-chown admin -R $install_log
-
 #=================================================
 # SPECIFIC RESTORATION
 #=================================================
@@ -115,6 +94,14 @@ elif [ "$export" = "libreoffice" ]; then
 	ynh_exec_warn_less ynh_install_app_dependencies $libreoffice_app_dependencies
 fi
 ynh_install_nodejs --nodejs_version=$nodejs_version
+ynh_use_nodejs
+
+#=================================================
+# RESTORE THE NGINX CONFIGURATION
+#=================================================
+ynh_script_progression --message="Restoring the NGINX web server configuration..."
+
+ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 
 #=================================================
 # RESTORE THE MYSQL DATABASE
@@ -126,6 +113,14 @@ ynh_mysql_setup_db --db_user=$db_user --db_name=$db_name --db_pwd=$db_pwd
 echo "ALTER DATABASE $db_name CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci" | ynh_mysql_connect_as --user=$db_user --password=$db_pwd --database=$db_name
 ynh_mysql_connect_as --user=$db_user --password=$db_pwd --database=$db_name < ./db.sql
 
+#=================================================
+# HANDLE LOG FILES AND LOGROTATE
+#=================================================
+
+mkdir -p /var/log/$app
+touch /var/log/$app/etherpad.log
+chown $app -R /var/log/$app
+
 #=================================================
 # RESTORE SYSTEMD
 #=================================================
@@ -164,13 +159,6 @@ ynh_script_progression --message="Reloading NGINX web server..."
 
 ynh_systemd_action --action=reload --service_name=nginx
 
-#=================================================
-# DEACTIVE MAINTENANCE MODE
-#=================================================
-ynh_script_progression --message="Disabling maintenance mode..." --weight=7
-
-ynh_maintenance_mode_OFF
-
 #=================================================
 # SEND A README FOR THE ADMIN
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index d93a114..c67b74c 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -44,7 +44,7 @@ pad_config_show_markdown=$(ynh_app_setting_get --app=$app --key=pad_config_show_
 #=================================================
 # CHECK VERSION
 #=================================================
-nh_script_progression --message="Checking version..."
+ynh_script_progression --message="Checking version..."
 
 # Wait for etherpad to be fully started
 ynh_systemd_action --action=restart --line_match="You can access your Etherpad instance at" --log_path="/var/log/$app/etherpad.log" --timeout="120"
@@ -196,17 +196,6 @@ chmod 750 "$final_path"
 chmod -R o-rwx "$final_path"
 chown -R $app:$app "$final_path"
 
-#=================================================
-# NGINX CONFIGURATION
-#=================================================
-ynh_script_progression --message="Upgrading NGINX web server configuration..." --weight=2
-
-# Overwrite the NGINX configuration only if it's allowed
-if [ $overwrite_nginx -eq 1 ]
-then
-	ynh_add_nginx_config
-fi
-
 #=================================================
 # UPGRADE DEPENDENCIES
 #=================================================
@@ -221,6 +210,17 @@ fi
 ynh_install_nodejs --nodejs_version=$nodejs_version
 ynh_use_nodejs
 
+#=================================================
+# NGINX CONFIGURATION
+#=================================================
+ynh_script_progression --message="Upgrading NGINX web server configuration..." --weight=2
+
+# Overwrite the NGINX configuration only if it's allowed
+if [ $overwrite_nginx -eq 1 ]
+then
+	ynh_add_nginx_config
+fi
+
 #=================================================
 # SPECIFIC UPGRADE
 #=================================================
@@ -229,8 +229,6 @@ ynh_use_nodejs
 ynh_script_progression --message="Configuring log rotation..." --weight=1
 
 # Create log directory
-install_log=/var/log/$app/installation.log
-touch $install_log
 chown $app -R /var/log/$app
 
 #=================================================
@@ -304,7 +302,11 @@ then
   fi
 fi
 
+chmod 600 "$final_path/settings.json"
+chown $app:$app "$final_path/settings.json"
+
 chmod 600 "$final_path/credentials.json"
+chown $app:$app "$final_path/credentials.json"
 
 #=================================================
 # SETUP SYSTEMD