I'm fed up with this crap. This game crashes during clan boss and campaign fights several times a week. I've lost DOZENS of clan boss keys due to crashes, and hundreds of energy. What I don't understand is why the hell do you take the keys or energy BEFORE the battle, and not after the fight so it saves progress without losing keys/energy cause of crashes during fights. I'm just sick and tired of losing valuable boss keys. Especially the ones I've spent 100 gems on, and lost cause of this dumbass system of consuming keys before the battle starts. Fix this crap. I'm not spending another dime on this game till you change key/energy consumption to after the battle.