Fanatec CSL Elite not working - at least cannot accelerate

I’m normally only playing Assetto Corsa, but decided to buy Forza Horizon 4 today for my little son.

We cannot accelerate/drive with a Fanatec CSL Elite. The engine RPM is going to the max, but the car doesn’t move at all. I’ve created a short movie on Youtube to show what is happening. Am I missing something here ?

Also, when trying to assign wheel/pedal buttons, I have to be very quick after selecting the action I want to change. If I press no button, the system is deciding I pressed 'Device 1: Button 105' (also shown in above YT link). I do not press anything, also don't know which button 105 would be?

The wheel itself is working perfectly fine in Assetto Corsa Competizione on the same machine.

Any hints ?

Oh, playing with keyboard configuration also works, but obviously that’s not what we want :wink: