SSL active but wont work

It might be a DNS issue. While Cloudflare can send valid certificates on their servers, the Cloudflare Origin certificate itself (the one that you uploaded here) is not trusted by the browser. If you turn Cloudflare on and off, browser may cache wrong DNS information, where it no longer go through Cloudflare but to the servers directly, which doesn’t have a valid certificate. The solution (if this is really the case) is to wait. Stop touching anything. Do not remove or add domains or nameservers, DNS records, etc. Give it sometime and see if that helped.