The DEMO version only includes 4 pages:
http://widerruf-darlehen-anwalt.de
http://widerruf-darlehen-anwalt.de/fehlerhafte-widerrufsbelehrung-widerrufsrecht-widerruf-bei-darlehen-und-kreditvertraegen.html
http://widerruf-darlehen-anwalt.de/entwicklung-des-widerrufsrechts.html
http://widerruf-darlehen-anwalt.de/fuer-welche-darlehensvertraege-gilt-das-widerrufsrecht.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.
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