I was finally able to log in after the authentication servers recovered from their dump. First character I logged into and its already happened again – another achievement had its original date overwritten. This time it was “Learning to Share”, obtained by purchasing the first Warband bank tab that I’d gotten first day the half-baked feature went live.
I’ve also been disconnected randomly while typing this comment, so I’ll be playing Baldur’s Gate III for awhile instead.