A lot of users are reporting this and it's like the fifth time I see Kenwood mentioned... I have no issues with my Toyota Entune unit, but it seems the Pandora app is either not updated to support Oreo on your car unit or the Pandora app on the phone is buggy. It works for some, fails for others... But since I keep seeing the same few cars/brands pop up, I'm guessing it's a 'problem' with the car app rather than the phone one.