Well, the problem when the mod doesn't activate, it's when you force closing the game after results of Medley Festival event, and open it again and try to play a song, all notes become MISS.
I closed the game and run it again, MISS notes again.
After some time if I open the game, mod finally works.
I don't know how it works anyway, but if
@Yaskashije can fix it, it would be nice.