The DEMO version only includes 4 pages:
http://dsmet.net
http://dsmet.net/bbs/write_bo_table-qa.html
http://dsmet.net/sitemap.html
http://dsmet.net/sub1-1.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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