I’m not certain about your first issue, but the latter two could be caused by an problem which was just corrected in a very recent server release:
- (Metadata) Extended music metadata and lyrics would be removed after a refresh (#12585)
To take advantage of the fix, you need to update to the latest Plex Pass/Beta release and refresh metadata for your music library afterward.
If this doesn’t correct the extra metadata and lyric issues, please say which scanner and agent you’ve configured for your library; Plex Music/Plex Music should result in both extra metadata and lyrics being available.
