Unable to edit playlists
I have an iPhone 13 Pro that is up to date. I use Apple Music for hours per day and this builds up a large cache taking up phone storage. To fix this I delete the app and resync my library and am good for a long time. This time after the resync I can’t add or take away songs from playlists I made. I can’t delete playlists I made or premade ones I saved either. I have spoken with support twice with no help. I have tried signing out and resyncing. Nothing fixes it. Ongoing for a week now. Any suggestions?
iPhone 7, iOS 12