I do not see the ADD button anymore in Apple Music to add music to my music library or playlist on my iMac(Catalina). ADD button is still visible on iPhone and iPad with same Apple ID.
In the Music app on my iMac (Catalina), I do not see any longer the ADD button to add songs to the music library or playlists. I'm logged in with my Apple ID and have an active Apple Music subscription. On my iPhone and iPad I can still see the ADD button. In the Music app on my iMac I can no longer see the Apple Playlist I have added.
iMac Line (2012 and Later)