Amazon Widgets not showing posts

I use Amazon Widgets in most of my posts. The code is showing in the html but the widgets have disappeared from the posts. The single text and image code are still working fine in the posts and all the widgets are showing in the sidebars. They were all working fine until early last week.
I have written to Amazon about the problem but have not received a response.

Is anyone else having this problem? Have you found any solutions?
Your help is greatly appreciated.
Thank you.
http://www.escapewithdollycas.com/