The problem of music collection or list disappearing:

Solution: This situation may be caused by the data not being synchronized. In this case, it is recommended to download the music playlist manually.

Right-click the QQ Music Player music synchronization-download list.

For lists that have not been uploaded, they cannot be restored

It is recommended that you click Sync - Upload the list in the lower right corner of the player before exiting the player each time, and click Sync - Download the list when you log in next time!

Also remember to upload the list before upgrading or reinstalling.

Additional note: The synchronization button has been canceled in the beta04 version. Right-click on the song list and there will be upload and download options.