Hi, what problems are we talking about? I remember that sometimes players may write that the game runs badly or slows down - we do our best and with every patch we improve the stability of the game, also there are a couple of tips how to troubleshoot on Android. The first thing I recommend you to have some free space on your device. If there are problems installing the game - make sure you have extra space on your permanent storage and even more (preferably x2 of the game's weight). If the game crashes while playing - clear the cache and RAM, and you can reboot your device so that nothing is preventing your device from directing all the energy to the game.
I wish you good luck and enjoyment!