If the error message "Insufficient balance" is displayed when attempting to purchase Saint Quartz through the Google Play Store even though you should have sufficient funds in your account, try taking the following steps to reflect your account balance.
① Clear the cache and data from Google Play Store:
1) Press the Menu key on the home screen, then select "Settings".
2) Select "Apps" > "Google Play Store".
3) Select "Clear Cache".
4) Select "Clear Storage" > "Delete". * Make sure to perform both 3 and 4.
* Be careful not to delete your "Fate/Grand Order" game data.
* Do not press "Uninstall Updates".
* Exact phrasing of menu items and steps to take may vary slightly based on device.
② Restart your device.
If the same error is displayed after taking the steps above, it is possible that a processing error is happening on Google's end when attempting to complete your purchase.
If the above information does not resolve the issue and you cannot purchase Saint Quartz, we ask that you contact Google. We apologize for the inconvenience.