I am also unfortunately on Xfinity. Can you provide steps to replicate your issue and post any screenshots that could be useful. Let try now on Linux and I'll boot Win11 to test.

Just logged into my account and I see you have to pay. I'm not paying, so you'll have to show the issue.

Do you have the same issue with Firefox in Troubleshoot Mode? https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode#w_how-to-start-firefox-in-4troubleshoot-modesf5safe-modesf

regular mode or troubleshoot mode, makes no difference...it starts to load and basically keeps trying to load...use to work fine prior to last update...no issues with Chrome or Edge...

Full browser screenshot are more useful. Try turning of ETP. see screenshot