If you'd like to redeem a promo code on your order, all you need to do is add the code into the provided text box within the checkout process. Please note that all coupon codes must be added before completing the checkout process, and we're unable to provide codes of any kind on PayPal payments, or in cases where a Bitcoin discount is being claimed.
Currently, we only allow the use of one coupon code per order. However, this doesn't mean you can't use additional codes on future orders.
If you're having trouble with a coupon code that isn't functioning as it should, get in touch with our friendly support team, and we'll do all we can to help.