When I first downloaded this game it's really fun. But after a couple of months, my account alway having technical loss, how come signal is strong, and my device is new. I wrote couple of times to the Help Center, but get nothing. I lost my booster, I just purchase, so that I can play, but help center won't replace my booster. So now, how can I play to maintain my rank, without booster. Everytime you have to purchase, you can win, please be fair to your customer, we spend to enjoy the game.