I tried to check whether I can watch some movies on my iTunes on the Macbook Pro. And I can stream some of them, and some will trigger this dialog:
and it usually means (for me), that I previously used an account for US or for Asia and now I am using the other one. So I closed iTunes, and restarted iTunes while pressing down the Option key, and started a brand new library (such as "iTunes 2019"). And iTunes populated my movie list from the server. So that means all the movies in this new list should be movies associated with this current account.
But surprisingly, looking at this brand new movie list, I tried to stream some movies in this list and they played, and some still showed that dialog and wouldn't play. Is this normal, or does it look like a bug and how can it be handled or solved?