I am trying to get to my site via Cloudflare but I am unable to do it. I reached out to my hosting support several times, I added all A and Cname records from the hosting in the Cloudflare dns settings. and whitelisted all Cloudflare ips and still not able to access the site.
The hosting provided say they can access it from their end, and there must be a problem in Cloudflare config.
I cant tell whether a missing certificate is responsible for this or not (generally I wouldnt assume so), but fact is your server does not seem to listen on the HTTPS port and in this case Cloudflare cant connect.