Bring back unlimited co-op and I'll reinstall the game. Your keys idea is garbage. Clanmates aren't always online. Stay away from this game Gem offers never pay out. If you're trying to get to arena 10, don't expect to do it without spending money. You will have better units, better hero level, and still lose if you're in arena 9. Game is totally rigged. Also players will " disconnect" constantly just to be toxic , while also trying to use an exploit from a year ago. Don't spend money here.