From time to time, we prepare promotional campaigns using codes. You can use the code when making your purchase, depending on its purpose, described in the promotional campaign, and it is usually a discount or free postage. Codes are usually active only for a limited time. At the end of the order in the online store, enter the coupon code at the checkout and click Apply. Consequently, the amount of the coupon is taken into account in the total amount to be paid.