The DEMO version only includes 4 pages:
http://ps-sobotka.cz
http://ps-sobotka.cz/home.html
http://ps-sobotka.cz/letni-tabor-bukvice.html
http://ps-sobotka.cz/turisticky-krouzek-sobotka.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