[Plugin: Easy FancyBox] plugin stoped working

Hi! I have been using this plugin to have a contact form in a pop-up window. It had been working very well for a year, but few days ago, i think when i uploaded wordpress, this plugin stoped working.

A example of a page where i have the plugin is this: http://potesaventura.com/grupos/ (click in the box that tells “Calcular Tarifa”)

Thank you very much!