Hi @quiztoon,
This sounds like a caching issue as in you have different caching rules for logged out users than those visitors that are logged in. Make sure that the scripts are not being handled differently for the two types of users. For more information on caching with the PDF Embedder plugin, please see our FAQ.
I do want to mention that I also looked at the page you provided the link to. You may have altered the page since posting this message but in the source code, I could not find an instance of the PDF Embedder code (most easily found by searching for “pdfemb”) and the document itself threw a Not Found on server error. If the document can not be navigated to, the PDF Embedder when in place, can not load it either.
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.
Thanks for the reply.
Yes I had to remove the option on the site as it just posted a link when users not logged in.
I had already the article re the cache and hade cleared the cache with no positive result.
Client has decided to run without the viewer.
The client did previously use the paid version but support ran out a year ago i think, hence coming through the free version support
