I'm logging in today, and D2 is telling me that is changing my Bungie name. Help???

After updating the game had me enter my date of birth, and agree to a license agreement before telling me that it's assigning a new Bungie name to my account because either:

1) I'm logging in for the first time or

2) I've recently changed my Bungie name.

I've done neither of those things, and my D2 companion app isn't loading my stuff either. DIM shows my stuff though, but isn't loading or refreshing properly.

What is happening, and did I just lose my entire profile???

UPDATE: I'm back. I have it all.