1, the signature control is damaged or the USB port of the computer is damaged; It is recommended to reinstall the signature control or replace the USB socket.
2. The certificate has expired (you can check the validity of the certificate through IE Browser-Tools-Internet Options-Content-Certificate-Expiration Date); If the certificate expires, the customer needs to renew the certificate in online banking or through the counter of our branch.
3. The browser is damaged. Replace the browser.