Please note that sometimes it takes up to 30 minutes for purchases to register to your account.
Please be sure to check your payment status under your Facebook
settings. If the payment is "In Progress," there's nothing Gamegos can
do about that - you'll have to get in touch with Facebook to see what's
wrong if the payment could not complete. This may have something to do
with your bank or Facebook itself.
Please submit a ticket if the payment is settled or complete and the credits still do not appear after 30 minutes.