Over the years, I have played multiple accounts simultaneously. During 8.3, I played my Pally, Priest, and Mage as a group, for instance. The night before 9.0.1 dropped, everything was fine.
Since 9.0.1, I cannot get the client to load more than twice. Sometimes, only once. When the client won’t work, it begins to launch, but ends up with the “Application Not Responding” status.
Naturally, I have tried rebooting. I have tried alternate ways of launching the client. I even tried on a different computer. No solutions found.
To whine a bit, I have spent weeks getting toons configured to run in teams of 3 for Shadowlands, including paying for some account transfers. Not to mention the cost of having 3 accounts to begin with. I am very disappointed in the situation in which I find myself.