The game shuts down abnormally due to several reasons. 

First, if the wireless network is unstable, you may get a message to check your network status.

We recommend playing on a smooth network connection as much as possible. 

Second, this can happen due to a lack of your device capacity or available RAM (Random Access Memory).

If you delete information such as unnecessary apps, videos, and pictures stored in your internal device, you can play the game more smoothly. Please make sure to allocate sufficient space on the device.

Finally, the game may suddenly lose its connection abnormally or fail to connect after an update or reinstallation. This may be due to some missing download files.

If this happens, please delete your game completely, and download the latest version game. 

Thank you.