Error in web interface for "Manage Services > Email"

My email through this Comcast Business account has never worked properly, which is largely okay because I host my email elsewhere, but I'm wondering if I'm missing out on communications from Comcast since it lists the non-functioning *.comcastbiz.net address as my primary email address.

When I log into my account and clcik on Manage Services > Email, I just see:

"We're sorry, but we are unable to retrieve your information right now. Try Again..."

Photo attached. This has een the case since I signed up in late 2013, and although I called in shortly after that, they weren't able to resolve the issue. I believe they tried to set up a new email box at that time but that also did not work.