The problem is caused by the fact that the game client can’t log you out of your previous account when you uninstall and re-install battle net.
This is not a joke, blizzard is literally at that level.
Log back into your previous account and manually log out, then go back to the account with which you’re attempting to log in, and log in, the problem will be gone.
If this is something you found in the last 24 hours, reports have been coming it that it’s been fixed since yesterday. So it may be coincidence.
Plus, if it was something account login based, it would affect all the regions. However, the issue has been only specific regions not working, and the others working normally.
Thus, this doesn’t really follow.
I literally solved the problem for myself by going back to my previous account and manually logging out.
If P is also caused by C, it doesn’t invalidate “If A then P.” Thanks.
It does if you attempted it after the issues was fixed though. “Thanks”