I own a OVH domain name. Everything was working perfectly, my subdomains were reachable without problem.
To setup my domain name with Cloudflare, I changed the DNS server of my domain name on the OVH setup page.
Since the DNS server migrated properly to Cloudflare’s, my sites are not reachable anymore.
I have : DNS_PROBE_POSSIBLE error.
I wasn’t able to find a solution on the forum for now.