If you are still unable to access your website after 48 hours, check whether your website refers to the right DNS servers. If the problem persists, this is probably because your internet provider’s DNS servers have not been updated yet.
Did you upload your site to the correct folder ? All files need to be uploaded to the public_html folder.
Do you have your first page named index.htm (.html, .php) ? Please remember that Linux servers are case sensitive, so be sure to use "index" not "Index".