Did you order Magic Colour contact lenses from Groupon?
If so, please first choose to order 1,2 or 4 pairs lenses with your lens powers and colour selections and out them to shopping cart. Then go to fill your mailing informations (name,address etc). When you arrive to the 'cash register' please first add your Groupon voucher code (not security code) to discount coupon field and click ACTIVATE. After cliking ACTIVATE you can see the amount of the purchase will change to be 0.00€. Also add your Groupon code to additional information field. Then send the order.