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.
Are you referring to the form http://www.jotformz.com/form/63495610666665 in your account? I have tried cloning the form to my account and tried adding the form elements to the form which seems to be working fine at my end.
Could you try opening the form on an incognito/private window or a separate browser to see if you are able to add the form fields to the form?
Please get back to us if the issue still persists. We will be happy to help.