We make sure that our games are optimised to work well on all supported hardware. If the game works slowly or has other performance issues, please try restarting your phone and the game and see if that helps.
If you’re certain that your device is supported and have downloaded the game legitimately from App Store / Google Play Store, but are still having performance issues that can’t be resolved by the above solution, please submit a request with the detailed description of your problem and the device model & operating system version.