X1 Box exchanged in Living Room now the X1 Box in Bedroom won't connect
The X1 box in the living room was exchanged after failing to work (it was old) and the new one installed yesterday is working fine. However, now the X1 box in the bedroom that was working just fine before yesterday won't connect to Xfinity. Have done multiple resets, restarts. unplugged and restarted, even was on the phone with Xfinity for over an hour and they couldn't fix it. Nothing was touched before or changed in the bedroom set up, just the X1 box was changed in the living room.
Any suggestions other than canceling service?