My dad has been locked out of his Apple Music account for 2 years now and It still has the same error message now. The message reads some like "Already been used with a different Apple ID" my dad and I love music so I gave him my Apple ID for him to use in exchange for a spotify subscription. Now I just don't see sense in why I pay $13 for a service I already have for free (also because I think apple music is better than spotify)
I want to note that my dad had a pixel and already had been using apple music with no issues for 4 years prior to this. This also happened when he got his phone replaced.
My best guesses are that something happened in the set up process that bricked apple music or we both don't remember his Apple ID and have just been inputting it wrong. Any Ideas?