here's a issue – since I moved my iTunes Library to external HDD, every time I launch iTunes it asks Apple ID password.
When I enter the login/password – all works almost perfectly after that, e.g. I can use iTunes Store, download my recent purchases.
“Almost” because except iCloud Music Library:
And the same issue repeats if I close and re-open iTunes, it asks Apple ID password again. Any ideas how to solve this problem?