Please follow these steps to resolve application running issues, but make sure your account is linked before following these procedures!
- Delete all unnecessary application and data from your mobile device to free up space
- Check your OS version and update to the latest version if possible
- Check your network (Wi-Fi/data) connection
- Reboot your mobile device
If the problem persists, please remove Guardian Tales completely from your mobile device and do a cache clear, then try installing it again when you're connected to a network with good Wi-Fi/Mobile Data (be aware the install may be several 100Mb data!)