The preview and the demos are separate. The preview which you are looking is our sales page which can also be viewed here: https://theme.co/x/
Regretfully there is no available demo content that you can import that looks like our sales page. You may replicate it by copying the layout from scratch. Most of our users usually used Integrity 1 demo (http://demo.theme.co/integrity-1/) instead and then modify that demo to look like our sales page or the preview.
Please check back our demo content knowledge base article to fully understand the demos of our theme.
Hope this helps.