Strange conflict with Print Friendly Plugin

There seems to be a conflict with your plugin and using another called Print, PDF & Email by PrintFriendly. When activated, the PDF Icon on the page (see link for example)
https://pacificnwprov.wpengine.com/provider/david-c-wade/

Ends up linking to a blog post I have associated with an author using your plugin. Very strange. We need both plugins to work unfortunately – the code they are placing into the page looks like this: <?php if(function_exists(‘pf_show_link’)){echo pf_show_link();} ?>

Why would this cause such a problem and how can I fix it?

Thank you

The page I need help with: [log in to see the link]