XFINITY EMAIL QUESTION

I used to live in U.S. and I retained my Xfinity email account when I moved back to U.K.. I can login to my Xfinity email account and send and receive emails as usual. However, I access my comcast.net email account on my laptop through Outlook. As of 01/03/24, and after many years with no issues, I suddenly stopped receiving comcast.net emails in outlook. I constantly receive a pop-up prompting me to enter my comcast password even though this password has not changed. I have made no changes to my comcast.net account settings in outlook. Incoming mail server is unchanged as imap.comcast.net with port 993, and Outgoing mail is smtp.comcast.net port 465. Just wondering if you're aware of any Xfinity mail server issues/changes that might be causing problem Thank you.