If you find that your order has passed the estimated delivery time after shopping on Amazon, you can try the following methods to expedite shipment:

1. Log in to your Amazon account, select the undelivered order on the "My Orders" page, click the "Contact Seller" link, and ask the seller about the order delivery status.

2. If the seller does not respond to your message, you can choose to activate this function in "Apply for A-to-z Guarantee" at the bottom of the order details page to notify the seller through Amazon customer service.

3. If the above two methods still do not work, you can solve the problem by contacting Amazon customer service, who will contact the seller and track the order delivery status. Please note that delivery usually takes some time, especially in special seasons or periods. When contacting the seller or Amazon customer service, you need to be patient and give the seller some time to process the order.