Marius,
So this doesn't seem to work on version 3.7. And the wiki article is now outdated relative to the latest version I guess.
My install works fine (followed your steps), but I can't do anything with any dialog boxes. They change nothing.
I think it'd be nice if you could upload a new video that shows setting up the newest version in FG 3.7 or higher, so that we can follow along and see if we're making mistakes using it or if it's actually not working properly.