Many game performance issues (i.e. Loading, Crashing, Shutting down) can be resolved in the following ways: 

1. Restart your game 

2. Force quit background apps and then restart your game

3. Restart your device

4. If the issue persists, uninstall and re-install the app.  

Beware: If you choose Method 4, you may need to restore your game progress. After the reinstallation, please contact our Support Team and advise which level you were on & how many coins you had. Our support team will help you restore the game data.

Note: You won't be charged again for the ad free version. The Restore button on the game setting page can help you get it back.