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.
Can you create a new page (a duplicate of your current page where you have placed your form) and add your form there?
There was a bug on embedding forms on wordpress.com pages, but it's recently been fixed. But the fix does not take effect unless the steps above is done, or if you replace your form with a different one. The need for this is because wordpress.com has a web cache that can't seem to be removed by users. So the immediate fix for this is to replace the page.
If this is unclear, please let us know.