Developers and support refuse to listen to complaints over the past 2-3 months and instead are doubling and tripling down on trying to make you spend real money to pass levels. They've also introduced bot players that start out at levels so high, you don't have any realistic chance of winning any prizes without spending a lot of money. Before they started doing this, I'd have rated the game 4-5 stars...but now...1 star is the best I can give them. They are about to lose a lot of players.