I recently ran into this problem of Cloudflare’s SSL Certificate Not Found. When I entered my website url on Firefox, Crome, Opera or other browsers , it would simply return an error. After trying so many troubleshooting techniques, I was able to find a working solution. So if your site is having this problem, kindly follow this guide.

To solve the problem, you will have to delete your site from cloudflare. Login to your Cloudflare’s account and disable caching, disable Cloudflare’s SSL Certificate, delete all your rules and finally delete your site from cloudflare. After you have deleted it, log on to your Cloudflare’s account and add your site again to Cloudflare. Enable caching & SSL Certificate. A new valid SSL Certificate will be reissued on your site. This is how I was able to resolve mine and I believe it will also help resolve yours.