We are sincerely sorry for this.
Firstly, have you made sure that all the conditions of the offer are met?
As a reminder, our offers do not work if you have at least 1 discounted item in your cart, they are also not combinable with other ongoing offers/codes.
For some offers, it is also necessary to have a minimum total amount before discount to be able to benefit from them.
Secondly, check that you have not already used this offer. They are indeed valid only once per person.
If after these checks the offer still does not work, contact us directly via our contact form.