Ugh! AT&T Mail: Headache

[tawcat]

All of a sudden my wife's email on her new MBA has stopped working.

I checked all the settings and found that on her MBA it is listing the account as an IMAP; it should be a POP3.

I deleted the account and tried several times to create a new POP3 account to no avail.

I cannot find anywhere to setup the POP account, seems ATT's Yahoo mail wants to automatically create an IMAP account.

I checked my iMac, my iPad, and the wife's iPad, all show a POP3 account. Why isn't this allowing me to setup a POP account?

Please help. Thank you so so much.