Origin Server and Edge Certificate

I manually generated new wildcard certificate using certbot and successfully installed it in my web server. However, when I access my website, I get a cloudflare error message “Bad gateway”.

Browser: check mark :white_check_mark:
Cloudflare: check mark :white_check_mark:
Host: cross mark :x:

I still have my origin server certificate in my cloudFlare account.

  • do I have to revoke this certificate to resolve my issue?
  • or do I have to upload my new LetsEncrypt Cert. to the edge certificate in cloudFlare?

Please help.