You can do this:
1, call customer service in front of the computer, reflect the problem, emphasize the problem of "the drop-down list is empty", and follow the customer service tips.
2. After installing the driver, there is a U-Shield brand menu in the menu, such as "G&D", which contains "Smart Card Management". After opening the program, the name is "Hardware Token Management Utility". Find the one whose hardware token status is displayed as working, and right-click it. There are generally four items in it, and you can get it by clicking one by one.