The DEMO version only includes 10 pages:
http://cnad.gob.sv
http://cnad.gob.sv/commission.html
http://cnad.gob.sv/supervision-2.html
http://cnad.gob.sv/user-protection.html
http://cnad.gob.sv/digital-assets.html
http://cnad.gob.sv/public-registry.html
http://cnad.gob.sv/public-registry/digital-assets-service-providers.html
http://cnad.gob.sv/public-registry/certifiers.html
http://cnad.gob.sv/issuers.html
http://cnad.gob.sv/issuances.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://www6.waybackmachinedownloader.com/website-downloader-online/scrape-all-files/ to buy a fully functioning site.
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