Unable to consistently load yahoo email

Situation I can't figure out. As of this week, which I believe coincides with the new xfinity security I am no longer able to load my yahoo mail. I have tried updating my browser, using a different browser, deleted my Xfinity Norton AV and also turned off the X1 security. I am completely confused as all other websites work fine.

I can eventually get the page to load after multiple refreshes and roughly 2 to 5 minute waits. The fact it doesnt work on multiple browsers and after deleteting nortons and X1 security has me extremely confused/Frustrated. Any thoughts?

Thank you!