Connecting to Yahoo mail with mail 14.0
I have a iMac late 2014 model running Big Sur 11.7.11, mail 14.0. It started having problems updating mail via AT&T yahoo. I removed the account on mail and now Yahoo will not let me log back in without creating a new account. The current account is up and running on an iPhone and a iPad. I'm trying to find out what is causing the account to be blocked?
iMac 27″, macOS 11.7