Tried to subscribe some of workshop challenges, no ones appears in my challenge list, got only the originals challenge.
And in fact, i really don't know where I'm suppose to find these challenge in game, cause when I look at challenge menu, i really don't understand where workshop challenge are suppose to be, there no place on this screen where it can appear(got 7 challenges and no place on screen for more, except if it has invisible scroll bar)
Note : I look in my workshop folder, all challenges files seems to be there, also turned my game in english to be sure(playing in french), cause all challenges has only "en_" languages files, but that's not change anything.