The problem is cashier does not know how to do this action. I have been to 2 stations listed but at both station the cashier did not has any idea on what this step is. Send message to Prestomall and no feedback at all. Very bad experience with this purchase and will not buy any voucher from Prestomall in the future.

Unlike Lazada where they send us the QR Code to be scanned by cashier. Much simpler.