Currently Qfile Pro will only update modify time to NAS.
For the others issues, please connect to QNAP support team(https://service.qnap.com/ja-jp/home), They will respond promptly and assist in resolving your issue.
[Important Notice] - To improve your connection speeds via myQNAPcloud Link, please open App Center on your QNAP device and update the myQNAPcloud Link app to the latest version.QNAP devices.
[Fixed Issues] - Improved app stability by fixing several minor issues.