I created a new profile, the gears are assigned, the shifter is in the description of the hardware , but when in the car in game it is like the H-shifter does not exist. When using my original profile, the H-shifter works just fine.
You are sure H shifter is ON in the car menu? I missed that one to because of all the (good) changes.
The H-shifter option is in the advanced settings tab of the controls menu, it is also part of the controller profile, so most likely it is the issue as Brian suggested.