Can't use my AT&T username and password on abc.com
When I go to abc.com it gives me an Error 400-2 saying it can't verify my provider.
When I push U-Verse on abc.com and put in my username and password, AT&T says "We are sorry, but you are not authorized to access this web site. Please verify you are authorized and re-enter your User ID and Password." Can anyone help with how to troubleshoot?