I'm unable to configure my controls to my tm300r or pedals or anything for that matter. I press detect & move my wheel & it doesn't pick it up. I try choosing load & selecting the wheel but it still does work. I have a Thrustmaster t300rs, th8rs, t3pa & a dsd button box. I also have a tm hotas thats used for flight sims.
Have you tried to actually assign the controls, eg click Steer left, then turn the wheel left. If you aren't using the Hotas for anything in rF I would unplug it.