High end theme- Unable demo content import

I’ve imported demo via WP dashboard/highend/ importdemos
The notification said it’s completed. However, the content is showed on my website is far from the theme content demo.
Without any technical background, it would be easier for me to have the demo content exactly like it’s shown in the theme live demo – so that I can replace the pictures and text later on.
How do I do it?
Thanks.