Add a Button To Page Post

Hello, Trying to Add a Button To Page Post, I found a plugin and it gives you a short code after you create it, but when I use it in the page I am trying to use it shows the shortcode with no effect to anything

– I am using a plugin called Button X that builds a button then you can paste it via short code in a page post
– Just shows the code [btnsx id=”178″]
– I tried using visual editor in WP and text (code) editor

Does this theme not support short codes or what may a solution be?

Thanks for your time

Alternatively I found this site http://css3buttongenerator.com/

How would I add a button to a page post using this?

Cheers