My website not showing up

I uploaded files on it, but doesn’t show up, even made a different folder on it http://reluapps.com/promo but still showing “The requested URL /promo was not found on this server.”

I see a website on http://reluapps.com/promo . Did you just add the domain name to an account? If so, note that it can take up to 72 hours for a domain name to start working due to a process called DNS propagation.