AT&T Messages can't sign in with @ATT.NET account
I got a tablet from AT&T a few months ago, when I tried to sign into AT&T Messages for Tablet application with my AT&T access ID, which ends in @ATT.NET, it tells me "The User ID and Password you entered cannot be used to access this application. Please sign in using youro AT&T Access ID instead." This IS my AT&T access ID. Same userid (e-mail) and password works from a browser. At that time, I opened an issue and they got back to me and said there was a problem with @ATT.NET accounts. But, here we are months later and it still doesn't work.
Seriously AT&T, how can this be so hard and take so long and even be allowed by your management to not allow ATT.NET accounts!?? This is not a userid/password problem as I can sign in with the exact same one to the browser version. I would think a bug that affects att.net e-mails would be embarrassing and would have some priority with people there, but apparently not!?