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 presume that you are talking about this form: http://www.jotform.com/50785253533962
Please do note that you have set conditions to hide the Submit button until a specific field is set.
Basically someone needs to select Presenter under Registration Type and then to select the option above, otherwise the submit button will not be shown.