Qnap NAS drive mount problem

And…it works!
Simply I set the NAS to wake up at 8:30 AM, power on Volumio after that, and the NAS is correctly seen!

But, there are minor bugs, switch from CIFS to NFS mode, never appeared before.

Here a screenshoot from album tab of NAS:

as you can see, there is a small * instead of an artist name and album name, and many image folder are disappeared. Oddly, If I click on a missing image album, the image is correctly show. Why? How can I fix that? In every folder there is a folder.jpg