Are you adding theme with a plugin or are you inserting those icons manually with HTML?
If you’re using some sort of plugin, can you please tell us which one?
Try adding them using the traditional syntax in the plain text editor and watch if it is working:
Hi Roberto, It doesn’t works with or without plugin ( Better Font Awesome ) in Articles ( Blog ) .
In the pages it works .
Look here : osowsky.info .
It seems to be the theme , since it works with other themes .