Plugin loading on footer when not logged in to WP

Hi Ramoonus, thanks for your amazing jQuery updater plugin. Here’s the issue I’m having: when I access the page while logged in to my wordpress site account, the plugin works fine. But when I access the site while not logged in, I get a ‘$ is not defined’ error on the browser console (jquery is not updated).
My jQuery code runs in the header, and looking at the page source I see that the plugin loads on the header while logged in (works fine), but when not logged it loads on the footer, which must be causing the problem.
Is there any way I can fix this?
Thank you in advance,
Martín

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