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.
What are the file extensions and size of the files you are trying to upload?
I made a test submission on desktop and could successfully submit the form. Are you experiencing this situation on mobile? If so with IOS or Android?
I will run further tests and will get back to you later.
We made further tests but the upload fields worked fine:
Which browser and version are you using?