Constant server disconnects, laggy app and the common problems with these types of games are even more obvious, your classic cycle of rng overpowered heroes and much higher level players can just attack lower level players with no downside and outright stop them from enjoying the game. You would think that the game would have some measures in place to discourage that but nope. It's a wonder the game sits at 4.6 but it's playstore reviews so that does not mean anything, companies just buy it.