Hello, regarding the situation that you have paid but it is not shown in the order, it may be due to the following reasons:
Payment Confirmation Delay: Online payment sometimes has a short delay. Please wait for a moment. The system may automatically update the order status within a few minutes.
Payment method issue: Confirm whether the payment method you use is correct. Some payment methods may require additional time to verify.
System failure: If none of the above conditions exist, it may be a temporary failure of the system. It is recommended that you contact customer service for confirmation.
As for whether you can use the same ID card to buy the same train, usually, the same ID number can only buy tickets for the same train once in a ticket purchase cycle. If your order has been displayed but you still want to purchase tickets for the same train, you may need to consult customer service for specific policies. In most cases, such operations are not allowed to avoid straining ticket resources. Please follow relevant regulations and guidance.