The issues related to Epic players logging in to the North American and European PC/Mac megaservers have been resolved at this time. If you continue to experience difficulties at login, please restart your client. Thank you for your patience!
And? Mount can’t swim… no big deal! Just another bug, like everything else in this game. Well, just relax and let’s wait for the new systems ZOS is working on. Instead of fixing the damn game, they’re more worried about killing TES.