Home Alarm Fails Cellular Connectivity Test

If I go to advanced settings, test connectivity

My broadband(Wifi) tests fine

My cellular connectivity fails

I have opened a case with Xfinity about 7 weeks ago. They have replaced my touchscreen several times and I have rebooted the device multiple times.

Now they tell me that the "error" is in "error" and to just ignore it -- that my cellular signal is fine -- and that they don't plan to fix the error.

So, I said -- this is equivalent to your car having the Check Engine Light on and being told to put tape over the light.

I think that this is utter Bull.

Does anybody else get this error -- or just me?