Hi @asianmed,
I see 5 PDFs linked at the bottom of that page. When I click on the linked thumbnails, the PDFs open in the browser default handler. If you want them to open in the PDF Embedder viewer, you would need to link those PDFs to the attachment page for the media file. This will work with the Premium version of the plugin. With the free version, you would link to the document directly.
If you have any other questions, please feel free to send an email to contact@wp-pdf.com as we may not see messages posted here to respond in a timely fashion.
Emma
