I cannot start the app. / The app crash while playing.
It may be improved by the following steps, so please try.
・Perform "Cache Delete" of the app itself and restart
*This function will lead you to redownload the app, so please try in the stable communication environment such as Wi-Fi
・If you use mobile data communication such as 4G line, change connection to stable Wi-Fi
・If multiple applications are started at the same time, close all the applications once
・Check your device’s internal memory and have sufficient storage
・Restart the device