shortcode show itself in the top of the page

HI there
I put the shortcode [rio-portfolio] in the bottom of my page but the portfolio shows itself in the top of the page, over my main content text.

This is the link of my page, where you can see the problem http://www.interaccioninformatica.cl/demo-reservas-online/

i’m using 3.9.2 wordpress version.
Is there any way to solve this?

thank you in advance!!! 🙂

https://wordpress.org/plugins/rio-portfolio/