New theme- No content showing!

Hi there,

I recently got a theme coded for me, they sent me a prview from their end, its is meant to look like this: https://devwp1.previewscreen.com/monaghan-weddings/

When I uploaded the theme, all the content is not there, none of the images, or the homepage image slider!

I’m really confused, I’m relativly new to WordPress, I am a XHTML and CSS coder, and understand a small bit of PHP. I just needed to create this site so it could be content managed, and thought WordPress was the way to go! Can anyone help me?

I just need to get my content up some way… any help would be greatly appreciated! Thanks in advance!