The DEMO version only includes 4 pages:
http://plugin.ch
http://plugin.ch/demo_subdomain/index.html
http://plugin.ch/inscription_subdomain/installation2/inscription.html
http://plugin.ch/author/admin.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 to buy a fully functioning site.
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