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'm not a tech support here but I would love to help you.
1) You may have put that website in restricted sites on your browser, so try different browsers
2) Clear your browser cookies and check the website
3) If this doesn't solve your problem contact the support as your IP may be block by jotform
I hope this helps you.