What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
landing page in a form class form handler JotForm video source
Apologies for the inconvenience or trouble that you are having.
It is highly likely that you will get script conflict when you use the form's full source code, and at the same time your website builder is loading external script libraries.
You also have jQuery scripts running at the bottom of your website page. You might need to check the solution of the user TheBronx in this link using the jQuery noConflict: http://stackoverflow.com/questions/16294536/jotform-conflict-with-jquery. The "$" is now free to use by JotForm. But if you will be using jQuery's scripts, you need to use the word "jQuery" when calling them, please refer to the link for the guide.
Here's an example conflict that I believe is happening, Fancybox is a jQuery plugin, but the code below it uses "$" which should have already been available to use by JotForm, it conflicted with that script. I believe Fancybox should use "lp.jQuery(document)" as it is a plugin by jQuery, but I might be wrong in this. You might need to change the Fancybox's actual script library to use a different syntax when calling the functions.
jQuery.noConflict is quite tricky especially if you have multiple libraries running on one page.