Suddenly lost access to email

About 10 days ago, I lost access to my email. I use Outlook Classic on my HP laptop running Windows 11.

When I log in, I get the error me

Invalid account address or passwo

I can sign into Xfinity with my username and password, and I've set these in Outl

I can read email in the web interface, but I've noticed that there are no new messages after the time this happe

I can send mail to my email address, and I don't get any er

What can I do to get email b

Than

u.k?s.d.k

..e:k yoack.ror.ned.ook.rdssag