Once your item is delivered, you have 48 hours to inspect it.
If you're happy with it, confirm the item on the deal page to release payment to the seller.
If you do nothing and there's no dispute, the deal completes automatically 48 hours after delivery, and the seller is paid.
Either way, nothing else is needed from you.
If the item isn't as described, don't confirm it. Instead, start a return on the deal page within 48 hours of delivery to return it for a full refund. See how to request a refund after receiving the item.