During the payment operation of 1., the page prompts "202 100 1, signature verification failed" or "signature parameter is missing". The installed digital certificate may have expired. Please delete the digital certificate installed on this machine and then reinstall it on this machine.
2. If the problem still exists after reinstalling the certificate, it is recommended to empty IE cache and try the payment operation again. Detailed operation method: Click Tools = Internet option in IE browser, click Label General, click Delete, and cancel "Keep Collection Website Data" in the pop-up window, click Delete, and then click OK.