Enter the voucher code that you have on the checkout page. Please be sure that the voucher code is still valid and use before its expiry. Also, take note of the various types of voucher code.For example,Some voucher codes can only be used with a minimum spending. Some voucher codes can only be used for certain item collections.Some voucher codes can only be used within a certain period of time.Some voucher codes are only for new customers where it is only applicable for a one-time use.