For every purchase you should first add the products you want to buy to the cart with the "Add to Cart" button. When you are finished, you are going to the cart button on the top right corner and click the checkout button. Fill out the checkout information for the delivery, shipping method and payment and finish the order.
The unique code you are looking for is 9-digit number on the side of the box, under the barcode. On the label is written UNIQUE CODE. With that code and the other information you fill, you can register your product for warranty.
If however, you have a sudden change of mind, you may return most new, unopened items within 30 days of delivery for a full refund. We will also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).