The DEMO version only includes 4 pages:
http://bcsuplementos.com.br
http://bcsuplementos.com.br/central-do-cliente.html
http://bcsuplementos.com.br/loja/logout_loja-597324.html
http://bcsuplementos.com.br/promocoes-s25.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.
Go back to the index page