I have the same problem with a swing radio in an Octavia Ambition/20 , took it to the dealer every other week since October, and last month I've left the car there for 2 weeks.
All the operations they made were online with the factory, Fw updates, 2 radio changes, and in the end, the factory answer was that the car is no supposed to have wireless carplay.
However every time I start the car, the radio tries to connect to the iPhone via wireless, but because the wifi on the radio isn't working, aborts and the iPhone gives an error saying the accessory is not compatible.
If the radio is not supposed to have wifi, then it should not try to connect wirelessly.
I don't know what to do next...
