Medtronic sensor "updating" now not connecting?

I have a Medtronic cgm, less than a year old because last October my old sensor (which was also less than a year old) broke.

Every once in a while (every four sensors or so) I get a message to not calibrate because the "sensor is updating" this time it did all that then told me to change my sensor.

I did that and now my new one just won't connect with the pump.

Any ideas?