the force feedback of the T128 steering wheel does not work on Fernbus Simulator

[GGTNT]

Hello everyone, I recently bought Fernbus Simulator except that for some reason the force feedback doesn't work :/ When I compare with Windows, I don't feel anything. Not even the manhole covers. In addition, the steering wheel is quite hard even though I have exactly the same settings as under Windows. Thank you in advance for your help :)