The reason why the completed order always shows that it is not completed may be because there is a problem with the synchronization of the order status information or the data in the order database is incorrect. You can try the following steps to resolve this issue:
Check order status synchronization: Make sure the order status has been updated in each system. Sometimes order information may only be updated in one system and the other system has not yet been synchronized.
Refresh the page: Try refreshing the order page or restarting the browser. Sometimes a simple refresh can solve the problem.
Contact Customer Service: If the above steps are invalid, please contact online customer service or telephone customer service and explain the situation. They may help you locate and solve the problem.
Check the system log: If conditions permit, you can check the system log to find whether there are error messages, which may help technicians locate the problem.
Retry operation: Sometimes, re-executing the order (such as canceling the order and then placing an order again) can solve the problem.
Check network connection: Make sure your network connection is stable, because network problems may also cause information to be updated late.
If you have tried the above methods and still cannot solve the problem, it is recommended that you record the specific process of the problem in detail so that you can seek technical support.