I'm not sure the domain registrar is completely at fault here. If your website going down will "kill your business" then it's a good idea to use a reputable on

I'm not sure the domain registrar is completely at fault here. If your website going down will "kill your business" then it's a good idea to use a reputable one and not the cheapest you can find. And looking at domain.com just now, they don't seem to offer .io domains, so I wonder how he even got the domain there?