Why does the word "5005 12: signature error, signature verification failed" appear in the system when I recharge Thunder 7 with Alipay?
If the certificate has expired, go to the bank to apply again (no charge, no need to replace K-treasure, bring your ID card and bank card), then go back and download the certificate again, delete the original expired certificate (that is, Settings-Content-Certificate), and you can see the validity period of the old and new certificates. Then it can be used normally.