The DEMO version only includes 4 pages:
http://programmi-pc.net
http://programmi-pc.net/optimizatsiya.html
http://programmi-pc.net/tematicheskiy-trening-po-russkomu-yazyku-ege-2023-senina-skachat-besplatno.html
http://programmi-pc.net/skachat-klyuch-aktivatsii-dlya-windows-10-korporativnaya-litsenzionnyy-klyuch-besplatno-2022.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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