Once an order has been placed on Amazonthunder.com, it typically cannot be modified. This includes changes to the items, quantities, shipping addresses, or payment methods. This is a common practice among many online retailers to ensure efficient processing and timely delivery of orders. However, it may be possible to cancel the order within a specific timeframe, depending on the store’s policies. After canceling, customers can place a new order with the desired modifications. It is advisable to check the current web page for specific details regarding the order modification and cancellation policies, as these can vary. If you have further questions or need specific guidance regarding an order, reviewing the website may provide valuable information.