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've tried creating a PDF form of your JotForm and I was able to open it using Adobe Reader XI without any issue.
What version of Adobe reader are you using? I've also cleared the form caches to see if that helps. Please try clearing the browser cache and try creating the PDF form again. Please let us know if the issue still persists. We will be happy to look into this issue further.