Why my form gets stuck and does not submit?

Minha página de agradecimento não carrega o link esterno.

Como resolvo? Fica pedindo para aguardar mas não carrega.

I have checked your form and was able to submit it without any problem, here's a screenshot about what I got: 

I can see you're also already using the iFrame embed code, on your form, just noticed it does not show the submit button so I would recommend you to increase the forms height to 1000px as shown in this sample iFrame code: 

    <iframe

      id="JotFormIFrame"

      onDISABLEDload="window.parent.scrollTo(0,0)"

      allowtransparency="true"

      src="https://form.jotform.com/FormID"

      frameborder="0"

      style="width:100%;

      height:1000px;

      border:none;"

      scrolling="no">

    </iframe>

If the problem still persists, please let us know.