Xfinity Mobile Login Loop

I'm having an issue that when at work, I cannot log in to my Xfinity Mobile account.  I've checked with my IT team and they can't find any reason why on our end.

I can get into my regular xfinity account and I can browse the xfinity mobile page, but when I try to log in to my account, it goes into an endless loop after entering my username and password.  This has been going on for months.  Is there a way to fix this?