Unfortunately, the serial number you entered does not match the selected promotional product. Please check your details. If the problem persists, please contact us by email at: info@asus-promotion.de I bought this product for cashback only, but it is not accepted on the Asus website. They write that they are not participating in the campaign. I have already opened this product to look for the serial number. If Asus technical support does not accept this campaign product, I will send it back to you!