The DEMO version only includes 4 pages:
https://modelleisenbahn.info/spur-zz
https://modelleisenbahn.info/spur-zz/e/cm_t-modelleisenbahninfo-21-o-3-p-48-l-bn1-mode-toys-de-browse-358607031-nou-1-fc1-000000-lt1-_blank-lc1-3366FF-bg1-FFFFFF-f-ifr_ext_iframe.html
https://modelleisenbahn.info/spur-zz/anlagen.html
https://modelleisenbahn.info/spur-zz/austellung.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.
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