Mine stopped working a few days ago and I believe I can attribute it to the fact that the car was plugged in and I inadvertently hit the climate control button. I received a message that an error has occurred. The only reason I believe this to be when it began was because I was at the dealership today and I let a salesman take it for an appraisal (looking to turn over this slightly new leaf --see what I did there?) And thought it'd turn the climate control on as it sat parked. Unknown to me, the salesman had plugged the car back in and I received an error message, but interestingly enough, the range finally updated.
While I assume no liability, try connecting the car to a charger and try turning on the AC via the app, and see if an error is reported.