JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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 having difficulty finding the form with the upload field. In order for us to be able to look into the problem you're encountering with your form, can you please share with us the link to the form in issue?
Looking forward to your response.
Thank you for sharing your forms. I've cloned and tested your form. I am not able to reproduce the same issue that you're having. The form was submitted without any issue.
You can also increase the size limits of the file upload field to 3MB as you see below:
If you have any question or issues, please do not hesitate contacting us. We will be glad to assist you.