Apple Mail 11.5 stopped getting mail from ATT.NET/Yahoo

During the prior week, got two emails from AT&T saying email would stop on June 12 unless I verified my email address. Did that and got a verified status back. On June 12, email did stop on my Mac with Mail 11.5. IPhone with iOS 17.5.1 also stopped getting email. I have a legacy att.net email address so no help from AT&T. I found an earlier Community response that advised deleting the email account and adding it back by selecting Yahoo. This worked and I now get ATT.NET/Yahoo email but Connection Doctor on the Mac shows that mail logs out after each get mail and the green status never lights.