BTW, a warning. I received what looked to be an authentic email from Apple Support Communities <discussions-updates@email.apple.com with the following message:
RebeccaLyvn has replied to your question. You can view the full discussion in Communities.apple music on Apple TV 3
Hi
I had similar issue. I called Apple Mac Support 1-800-560-5378
Technician fixed my issue right away.
You can try
Thank you
Called. Was NOT Apple. Foreign (not from US) accent. Directed me to go to www.anydesk.com to download and install it. When I saw what he was going to have me do, I hung up.
BEWARE.