Sbcglobal.net requiring phone verification to access email account

 

This account does not have a att wireless number but I enter in my number and get this following after I enter the code:

I hit take me to account and it just takes me back to at&t log in, requesting password. I've already reset password and cleared cache. And by the way, there is already a verification email provided in the att profile that I am able to access. Just can't get access to my email for any new devices.  I have a different laptop and new phone but can't add this email address.