Each дисконт Magformers has a different expiration time, you can select Скидки Magformers you want to use to redeem the discounts when making the payment. There are also some Magformers промокод that have a limited range of use, so you should also use it within the range. Such as a certain type of products, when the type of product has been sold out, then your дисконт Magformers is invalid.