Instant Delivery is a feature of itemku that speeds up the process of game voucher transactions. Game voucher codes ordered from product marked with "Instant Delivery" will immediately appear in the Transaction Details on your Purchase History page, right after the payment is confirmed.
 What if the code I received cannot be redeemed?
 If the code you received cannot be redeemed, report it immediately to itemku's for further investigation. If the investigation results indicate that the seller sent the wrong code, your order will be refunded 100%. On the other hand, the seller will receive a warning and potential account blocking penalty.
 Account blocking penalties can be given to both sellers and buyers if proven to have abused the system or filed false reports.

What is Instant Delivery? - Pusat bantuan itemku