PayPal field isn't grabbing updated info and form freezes

Greetings, 

I have a form embedded on my website for registering new students at our school and collecting a down payment for student tuition.

When I test the form using the DIRECT FORM LINK in JotForm, everything works fine, but when I test the same form as EMBEDDED in my Joomla-based website, the PayPal donation field does not update the mount from the "today's payment" field as designed. Also, if you just click the submit button with this missing info, the button just says "Please wait." and sits there frozen forever. 

I've included 2 screen shots pasted in ONE file. The TOP shows the problem from the embedded form while the BOTTOM shows the form working correctly when directly linked to.

Please help! We are trying to collect registrations for the coming school year now.

Oh... and I forgot to mention, these questions and screens are on PAGE 9 of the form.

The current embed code of the form might be conflicting with your page's code. Please try embedding your form with the Iframe code: https://www.jotform.com/help/148-Getting-the-form-iFrame-code 

If the problem persist with the Iframe code, please remove the script part that comes with the Iframe code, so paste the code in a text editor such as WordPad to visualize it:

Let us know if you need more help.

Thank you! That worked.