The DEMO version only includes 4 pages:
http://wp-themes-pro.com
http://wp-themes-pro.com/theme-wordpress.html
http://wp-themes-pro.com/theme-wordpress-gratuit.html
http://wp-themes-pro.com/meilleur-theme-wordpress.html

It is possible to download these free files and install them on your server, so you can test how the site works.
Visit https://www.waybackmachinedownloader.com/en/buy-wayback-machine-downloader-recover/ to buy a fully functioning site.
Go back to the index page