Tabbed Panels not Working

Hello,

Thank you for your plugin, I love the simplicity and ease of use on my client’s website!

I wanted to show the results in a tabbed preview, I added the suggested code into the top line of functions.php, but nothing happens. Would you be able to help me troubleshoot?

Thank you for your time,

Mer7ry

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