The DEMO version only includes 4 pages:
http://bratunsafe.pt
http://bratunsafe.pt/quem-somos.html
http://bratunsafe.pt/loja.html
http://bratunsafe.pt/loja/display_mode-grid-product_archive_layout-shop-left-product_columns-4.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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