I figured out that this mod let us spend coins and crystals that we don't have and so our amount of coins and crystals will go under zero. It seemed OK and so I tried to play the game with this mod but got into problem! With this mod I completed 2 campaign maps at 100% and won 10 arenas and then I bought a lot of chests so I could upgrade all of the units and spells to max and after that I tried to play the rest of the game campaign but now I am in trouble! Now in the campaign map when I tap on a chest nothing happens and I receive nothing and the progress present in the map doesn't improve! Plus when I try to buy a chest with the crystals that I don't have and when I try to open the chests that I get from arena, simply the arena chest disappears and nothing happens! How can this be fixed?