If the payment page prompts "202 100 1, signature verification failed" or "signature parameter missing", it may be that the digital certificate you installed has expired. Please delete Tenpay digital certificate and reinstall it on this machine. Tips: If the problem still exists after reinstalling the certificate, I suggest you empty IE cache and try the payment operation again. Clear ie cache: /info/43282.html If you try to clear it, it is not enough. Maybe your browser is broken. I suggest you change your browser or reinstall it. I hope my reply can help you. If you have any other questions, please ask again and we (think tank members) will answer them in detail. At the same time, thank you for your support to Tenpay, thank you!