Apps in General Options but not available in-game.

Firstly, let me apologise as I know as a newbie I'm going to get flamed for asking a question which probably comes up a lot..

I have searched this site, googled and been through steam and have tried all the solutions suggested and I have followed the various guides in YouTube but to no avail.

Basically, when adding mods to my new Assetto Corsa install, I can use all cars and tracks with no issue. However, apps such as FFB clip appear as selectable option in the general tab but in-game they...

Apps in General Options but not available in-game.