Subdomain DNS Records Not Publishing Globally - fever.gt.tc

Thanks a good piece of info. Is my site using A record or CNAME? When I test with the A record on whatsmydns, it works. But it’s red crosses worldwide once I change to cname. Can you test: whatsmydns for fever.gt.tc (CNAME record) If UK can resolve the CNAME but Singapore can’t, then Singapore ISPs don’t follow CNAME chains properly. Many thanks