My main Xbox EU account got completely stuck right after the Wrathstone download so I haven't been able to login there even once since, I'm still able to play on NA server. I consider my EU account intentionally blocked at this point, I've asked if it's so, but no answer obviously. I get totally ignored on Xbox support section by Zenimax personnel nowadays so will be interesting to see how this is handled, I bet the basic troubleshoot list and the advice for creating a support ticket, after that good luck and have insane amounts of patience. There's some other players having this same issue, they aren't able to login on their original account, but the other server still works. Luckily for Zenimax still only so few players are having this so there's no point wasting too much resources on this, however I predict this will become more common feature in the future.