Oops! Page not found

Installed and activated WP Catalogue, created catagories and published product pages ( http://vtechs.co.in/index.php/products ) but the its not showing the pages, gives error : 404
Oops! Page not found

Pls refer to the error page : http://vtechs.co.in/index.php/wpcproduct/fire-suppression-system/

Were sorry, but the page you are looking for doesnt exist.

Pls help

https://wordpress.org/plugins/wp-catalogue/