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.
Our apologies, Could you share us the link of your form that has a problem downloading the source code?
This is the link
Apologies for the inconvenience that this might have caused you.
Upon checking your account and the form, I was able to download the .js and .css files. If I may suggest, please do try the following:
3. Try using different web browsers.
I hope this helps. Let us know if the above solution worked.