Can not upgrade to Premium with VIP barcode
You can find a VIP barcode on the ELFINBOOK manual so that you can scan the barcode to upgrade to Premium.
If the VIP barcode is invalid, please tap the link below to appeal, we will deal with that as soon as possible.
But If you have upgraded to premium with the VIP barcode. It can`t be used again. One VIP code for one premium account.