You’re Already An Apple Music Subscriber
I am getting a “You’re Already An Apple Music Subscriber” when trying to play music I have added through Apple Music and am unable to play any of the songs I added through Apple Music.
1. Restart your device. Then try again.
2. Turn off iCloud Music Library and then turn it back on. Then try again.
3. Sign out of the iTunes Store and then sign back in. Then try again.