The reasons may be:

1. This situation is due to slow network speed or too much browser cache. Clear the cache and then check the network connection;

2. The situation where the order cannot be submitted may also be that the product is suddenly removed from the shelf or out of stock, and there is no way to submit. Solution: Clean up the system garbage and software cache or refresh the purchased product.

1. In many cases, this situation is due to slow network speed or too much IE cache. Clear the cache and then check the network connection. You can test the network speed to see what the reason is.

2. You should ask whether it is because of personal computer problems or something else. Ask the seller if he has seen the order. Sometimes the network is delayed, it is easy to place two orders. If you place two orders, it's okay, but you are afraid of paying two cents, so it's best to ask clearly in advance.

3. Unable to submit the order. If you are sure that you have not submitted it, then resubmit it. If it still fails, try another browser. Sometimes some browsers are prone to crash and similar problems. Extended information: If the seller is out of stock of a certain style of the product, you cannot place an order. If the seller's product is on pre-sale and the time has not yet arrived, you cannot place an order. If you place an order and it is closed within 5 seconds, it is probably because your praise rate is too low, and the seller has set up a bad reviewer to intercept and not place an order for you.