As I posted earlier only Dexcom G6 works with Tandem and OmniPod 5 closed loop pumps. Medtronic sensors only work with their closed loop pumps.
Libre doesn’t work with any closed loop pumps. Little or no actual competition for pump users that want closed loop.
It happens to me occasionally, usually when the transmitter or sensor is nearing the end of its life, or after the sensor first finishes its warm-up session (newly inserted). If in doubt, always depend on the finger-stick to make any decisions.
I think I am getting weird sensor readings because the transmitter is expiring soon. Last night the readings ping-ponged all over the place and completely missed a post-meal spike. 