[problem solved] iPad loses connection to Synology NAS in the Files app
solution:
- If the old smb connector is still in the sidebar of the Files app, click the exit button.
- Reset 'Connection to Server' in the Files app. Put ".local" in the smb server name, such as "smb://XXXX.local", even though the smb server address given by the Synology OS has no ".local" extension.