How promocodes work?
Let's say you want to make a purchase of 40 euros or more and use promo-code "10%discount". First add to your cart products more then a value of 40 euros. You can add different products. When you go to check out you will see below where you can enter your promo-code. You can also see in below picture:
Click on "Enter a promo code", to enter your promocode.
You have more then 40 euros in our cart so you can apply promocode 10%discount. Type in 10%discount and press apply.
You can directly see afterwards that your 10 percent discount is applied to your cart total.
So it is that easy :)
With the same principle you can use promo-code:
20%discount, if you make a purchase of 70 euros or more.
30%discount, if you make a purchase of 130 euros or more.
40%discount, if you make a purchase of 250 euros or more.