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 could be a temporary browser issue. Have you tried clearing your browser cache? If not please clear your browser cache and I am sure your problem will be solved.
Here is a guide which should help you clear your browser cache: http://www.wikihow.com/Clear-Your-Browser's-Cache
Do get back to us if the issue persists.