If you encounter this error while trying to make a purchase:

Please don't hurry to make another purchase! Otherwise, you may be double-charged. Please wait for a couple of hours and ensure that no charges have been made and the purchase does not appear in your App Store/Google Play purchase history. Also, make sure that your Internet connection is stable. After that, you can try making a purchase again.

What if the purchase doubled?

Don't worry: please get in touch with us via the "Support" button in the game settings, and we'll assist you as soon as possible.