The game is quite fun and enjoyable at face value. The problem is you cant really enjoy it since adds bug out the screen dark and restart the game quite frequently. Even worse - the client to server communication is done in real time, meaning any bit of connection lag makes the game unplayable. This is way worse when you consider that you lose entry tickets to levels and love multiplayer/event points when that happens.
It’s a mobile game. You cant expect a flawless connection to the server at all times. Change it so that the client can work offline and only sync up when connection is decent.