You can use all MOD keys 100% Someone here using it until Reach to end of stages using in nightmare is some kind abuse coz is for Real whale account they will suspicious how come did you pass on that stages there is no Auto banned here like some of Idle games they will put you on the list of ban and then when they reach enough account to ban they will implement the Banned Hammer in other words you will still wasting time playing the game but you dont know you already on the list of ban.
If you reading some news in their official website they posting all account getting banned maybe you already in their list maybe not. much better to be safe than sorry later i am right?