Error 9999 indicates that some part of your game installation is corrupt. This is commonly fixed by performing the following steps, depending on your device type:

[Android]

• Go to device setting > App > Guardian Tales
• Select Storage > Clear Cache > Clear Data
• Restart your device.
• Re-download the game.

[iOS]

• Hold the power button until "Slide to Power off" displays and turn it off.
• Hold the power button until your device opens again.
• Uninstall the game, clear your cache, and re-download the game.

If this does not fix the issue, please contact our support team by clicking the button at the bottom of the page.