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 have checked your form
I see the size limit per uploaded file is 10 MB (10240 KB). Make sure your users do not upload files bigger than that
Also, you don't need to have multiple file upload fields, if you expect less than 10 files per user, I would recommend you to use just one multiple upload field or convert those fields into single ones by clicking on the icon to set them back to "single", as shown below
Thanks for the Help!
You're quite welcome. Contact us again anytime should you have other inquiry.