If your promo code doesn't work, check whether the following applies to you:
✳ You input the wrong discount code.
✳ The discount code has already been claimed or used to the limit.
✳ You cannot use a discount code together with the installment payment method.
✳ You are not the owner of the code. Some codes can only be used by certain accounts.
✳ The product you are buying does not include in that code campaign.