As long as you haven't received the item by the estimated delivery date, you can contact the seller.

If you are still waiting for the item to be delivered, you can check when the item should be delivered. If the estimated delivery date has passed, please let the seller know so that they can help you solve the problem. They will provide you with detailed delivery information, send you a replacement item, or process a refund for you.

After letting the seller know that your item was not delivered or that you want to return it, they have 3 business days to help you solve the problem. You can check for updates from time to time to find out what you need to do next.