We're actively investigating some more login issues this morning that are affecting Fallout 76 and other Bethesda games. If you manage to login you may notice some services like Fallout 1st, social menus, and the Shop are affected. We're working to correct the login issues asap!
Services are being restored for Bethesda games now, and you should be able to log back into Fallout 76. Thanks for hanging in there today!