Cannot Access Port Forwarding Screen

Hello

I am following the instructions here for users with an xFi Gateway to set up port forwarding for my home network: https://www.xfinity.com/support/articles/port-forwarding-xfinity-wireless-gateway

I am unable to do this, however, since I am getting an error on the Xfinity mobile app. The message I see says "Something unexpected happened. We can't display your details right now. Please try again or come back later". This issue has persisted for the past couple days, and I have tried dozens of times and have had no success getting into the port forwarding settings. I have logged out of the app and logged back in, I have uninstalled and re-installed the app, I have reset my gateway, I have turned my phone off and on and tried again, but to no avail.

Can any employees help me with this problem?

Thanks!