X1: One device will not work properly with the remote

I have configured my PVR Arris: AX013ANM. I can control the device effectively with the mobile app. However it does not work properly with the actual remote. It barely responds to any button presses and is unusable. Other IR devices work properly and I have validated that it is in plain view of the transmitter. I have re-synced many times and I have tried removing it and setting it up as a different dvevice with the same result. Weird since the app transmitts via the hub too. How can I resolve this?