The DEMO version only includes 4 pages:
https://modelleisenbahn.info/shops-links
https://modelleisenbahn.info/shops-links/anlagen.html
https://modelleisenbahn.info/shops-links/austellung.html
https://modelleisenbahn.info/shops-links/normen.html

It is possible to download these free files and install them on your server, so you can test how the site works.
Visit http://www4.waybackmachinedownloader.com/en/buy-wayback-machine-downloader-recover/ to buy a fully functioning site.
Go back to the index page