This has happened to me twice now and I checked the rear door just in case and this was locked solid (I always wait for the indicators to flash and the "clunk" from the solenoids. I think VW have some major bugs with T6.1 MY21 around locking (and other things) which is why the promise of updates.
There's another quirk people need to be aware of with the locks.... I was sitting in the cabin of the Cali and my keys had come out of my pocket. When I moved I sat on the key and the Cali locked. I tried to get out but all the doors were deadlocked. I picked up the key and pressed unlock, which unlocked the doors again but about 20s later the doors automatically locked again so I repeated this by unlocking and again 20s later the doors locked without me touching the key fob and the alarm also went off because I was moving about.
What I found was, if I opened the driver door then everything reset back to normal. It is widely advised that you never lock the Cali with the key fob whilst inside but the automatic locking until the drivers door is opened is a bit quirky.
On the note about WeConnect and heating controls...
VW mention three heaters. 1. the climate control 2. auxiliary coolant heater 3. auxiliary air heater. The manual states that the auxiliary
coolant heater can be controlled by the VW app. The California does not have the auxiliary coolant heater, only the auxiliary air heater which as we know cannot be controlled by the app.
Hopefully this may change but there is a possibility that VW are talking about the auxiliary coolant heater still in their communications. Lets hope not