To redeem a voucher, you can enter it in the shopping cart in the field "voucher code" or in the last step "check & order" during checkout.
Then click on the right arrow next to the voucher code field to redeem the voucher.
After successful redemption, the voucher will be displayed in the item overview of the products to be ordered.
Please check whether the correct amount is redeemed. Otherwise please contact us via the contact form and we will find a solution.
The following contributions may also help you: