Mine was fine this afternoon. I didn't need it to set off as the car was in the cool garage, but when my friend and I were getting ready to leave our flute lesson, our teacher expressed an interest in the app and what it can do. I ran through the whole thing, remote control, vehicle scan, charge management and so on, and they all worked. Then I set the aircon to come on so that the car (which was by now parked in full sun) would be cool by the time we had cleaned and dried our instruments and packed up.
Worked a treat, lovely and cool, until my friend sat with the passenger door open for about ten minutes negotiating the date for our next lesson with our teacher, who had come out to find out whether it had worked!
On the way home my friend asked about cruise control and persuaded me to try the ACC for the first time. It wasn't as scary as I had expected and I should probably experiment a bit more with it.