Images and forms don’t show up in posts

Hi, my name’s Lee, I’ve started to do a little internet marketing and I’ve got a theme for WordPress called Shinra Blu House, this theme can be found here: https://www.wpthemes360.com/themepreview/ShinRa_House_Blu/

I’ve tried adding images and aweber forms to the posts using this theme with no success, they appear in the backend panel when Im writing the article, but dont show up on the live site. They do however show when the style sheet is changed by the user using the theme’s feature on a live site.

What am I missing? do I need to add some code to the defualt css stylesheet?

Appreciate any replies,Thanks
Lee.