Hi there, I’ve looked at your site, but it doesn’t look like WordPress has been installed correctly, currently you’re only showing wp-content, and wp-admin files. You’ll need to go back into your hosting account, or speak to your host directly and get them to install WordPress correctly before you being to install the theme. Currently it looks just like this – http://screencast.com/t/Yr2GlGgl4Lw2

Once you’ve installed WordPress and can see the front end of the site correctly, install the Restuarant theme via the wp-admin. Then follow the guide here – https://support.redfactory.nl/documentation/restaurant-theme/ from the bottom, up to get the site working as in the demo.