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.
It seems that your oembedded form is not submittable due to the wordpress restrictions. A ticket has been sent to our developers to see if they can check this further.
In the meantime, I would like to suggest wordpress embedding method from the following video guide:
Text version of the guide:
Please give it a try and let us know if you need any further assistance.
A new version of our oEmbed plugin which will fix this problem has been released. You can install in from inside your Wordpress dashboard.