You can enter the voucher codes both before ordering or during the online return. The vouchers are then automatically taken into account when the invoice is created.
This applies to the website as well as to our mobile apps on Android and iOS.
Please note that there are different types of vouchers which cannot always be combined with each other. Furthermore, there are vouchers which are only valid for a certain period of time or which are linked to a minimum order value.
Of course, you can also always contact our Customer Support, who will be happy to answer any questions you may have about your vouchers.