XFinity App No Longer Showing Gateway

I recently had to replace my modem to a XB8 from a XB7 and my Xfinity app no longer shows my gateway or any connected devices. 

My Xfinity app is fully updated and I have tried multiple times to uninstall, restart, and log back in, even from different devices, and yet nothing works.

My internet service works fine, although it doesn't show in the Services section on the app, I'm unable to access the devices and modem settings in order to utilize the 2.4G wifi frequency for a few of my devices.