When you encounter signature failure when using online banking, there may be many reasons. First of all, it may be that the bank account number or password you entered is incorrect, or the current balance of your account is insufficient, or the account has been frozen. In this case, be sure to check whether the information you provide is accurate, confirm whether the account status is normal, and ensure that the account has sufficient funds for transactions.

Secondly, network connection problems may also cause signature failure. Please check whether your network connection is stable and try to refresh the page or log in to the online banking system again. If the problem persists, it is recommended that you contact your bank’s customer service for professional technical support.

Finally, online banking signature failure may also be due to digital certificate issues. If the certificate has expired or been revoked, you will need to renew the certificate and ensure it is installed on your computer. In addition, make sure your computer does not have software or plug-ins installed that may interfere with online banking operations, which may cause the signature process to be blocked.

To sum up, when the signature fails, you must check the account information, network connection and certificate status one by one, and seek help from the bank if necessary to ensure the smooth completion of the online banking operation.