1. Check the network connection: Make sure that the device is connected to the network, because network support is required for authentication.

2. Confirm that the information is accurate: confirm the input authentication information (such as student number and library card number, etc.). ) accurate.

3. Confirm the account status: confirm that the account has not been frozen or deactivated and has not expired. There is something wrong with the account, so you need to contact the librarian to solve it.