Thank you for taking the time to post on the Xfinity Forum. I’m happy to provide further direction.
Have you already reset your network settings on your device? You can do so by going into settings, general, reset, then select reset network settings. If you are still experiencing a lack of connectivity after resetting the network, it may be necessary to do a factory reset of the device.
In order to do a factory reset, you’ll need to be in the same settings location mentioned above, but you’ll want to select erase all content and settings. If you do a factory reset, please make sure to back up the device contents first.
Furthermore, make sure that under settings, privacy, location services, that you have 'allow location access' set to either 'always' or 'while using the app'.
Let me know what result you get.