I found a way to hack it !! : You can hack it in Filza by going in the library preferences of the game right after you finished the introduction race near the 30 trophies BUT you have to desactivate iCloud and delete the iCloud hot slide save in your device settings before you hack the game, then when you’ve done the iCloud part and you’ve hacked your game, you can return to your device settings and activate iCloud again to save your money and gems or numbers of trophies car cards ect you can change everything
(its located in the gameplayer files) in the file titled “com.tapcheer.hotslide.plist”
youre welcome
edit: I found that out almost two weeks ago