The DEMO version only includes 4 pages:
http://jnrt.info
http://jnrt.info/ojs/index_journal_jnrt_page_issue_op_archive.html
http://jnrt.info/ojs/index_journal_jnrt_page_search_op_authors.html
http://jnrt.info/ojs/index_journal_jnrt_page_search_op_titles.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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