Hello,
Please check the page now.
You can Run the Setup Wizard http://prntscr.com/k1wth6 to install demo content and demo version + install child theme.
Theme Configuration you can change using Theme Options.
Also, I would recommend you to read our documentation – https://xstore.helpscoutdocs.com/category/8-theme-installation
Feel free to ask if you have any other questions.
Regards