You may redeem your voucher / coupon after creating a customer account.
After you have created your customer account go to the shopping basket. There you can put your voucher / coupon code into the designated field.
You can see if the use of your voucher / coupon code was successful at the end of the checkout process.
Unfortunately it is not possible to redeem more than one voucher / coupon at a time.
If you try to redeem more than one voucher / coupon only the one with the highest value will be used.
Vouchers / coupons may not be used for special offers / reduced items.
Vouchers / coupons will only be applied to non-reduced items.