Thrustmaster T500RS custom control schemes won't activate


my T500rs works quite well, the game picks up the wheel, pedals and shifter just fine. But if i set up an custom control scheme it just does nothing. I map all buttons (all required ones) but when i save and close the menu the ingame controls just remain standart.

Any idea how to get to use custom schemes? I tried all 4 pages but none of them seem to be used if i set them up. Its always just the standart premapped T500 scheme.