Problem: Clicking PrintFriendly button launches the browser print, not the PrintFriendly preview. 

Solution: Add the PrintFriendly JavaScript to your footer.php file.

• Go to your WordPress Admin Console
• Click Editor (under Appearance).
• Then click Footer (footer.php).
• Copy the code below and paste before </body>.

<script type="text/javascript"> // PrintFriendly var e = document.createElement('script'); e.type="text/javascript"; e.async = true; e.src = '//cdn.printfriendly.com/printfriendly.js'; document.getElementsByTagName('head')[0].appendChild(e); </script>