In the v1.1.9 theme update we updated from Font Awesome v3 to v4. In your content you will need to use the new icon class names, they all changed when Font Awesome went from v3 to v4. The demo content is still using the old v3 class names, that will be why you can’t see icons in the demo content.
So whereas the old v3 class names were used like this…
<i class="icon-plus-sign icon-large"></i>
The new class names for the same icon and size are this…
<i class="fa fa-plus fa-lg"></i>
In icon shortcodes you should also use the new class names. For example, with the [bullet_list] shortcode, where an old Font Awesome class is used like this…
[bullet_list class="icon-ok" color="#5E9FA3" size="large"]
You should change that to use the new class name for the old “ok” icon, which is this…
[bullet_list class="check" color="#5E9FA3" size="large"]
If you are basing your site design around our demo content you will need to modify the demo content wherever you see the old Font Awesome class names used.
The Font Awesome icons are here → http://fortawesome.github.io/Font-Awesome/icons/
Some example of how to use them are here → http://fortawesome.github.io/Font-Awesome/examples/=