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.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
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.
I tested and could replicate the same situation:
I have forwarded this situation to our developers so they can investigate further the causes of this situation. We'll contact you as soon as we have more details.
We just received news from our backend team that this has been fixed. Could you please try again?
Also, please check this guide to learn more about the fillable PDF forms: http://www.jotform.com/help/312-Fillable-PDF-Everything-you-need-to-know-about-JotForm-Fillable-PDF-Creator.
Thank you for your patience.