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 suggest reviewing the user guide also -Changing-the-Upload-Size-Limit
From the user guide
" JotForm upload max size = 1GB or less per file (use 1048576 value in KB to set the 1GB limit)
JotForm maximum number of files = Recommended value is up to 25 files per request (submission). "
Please make the necessary correction in your form http://www.jotformpro.com/form/41902031426948 as mentioned in the user guide. This is to avoid any issue that could happen due to incorrect settings.
I also checked the submission data of the form in the View Submission page, but so far I see that it was allowing more than 6 uploads in the submission.
If you can guide us where the issue is happening, we will check it as well.
Do let us know if issue still remains.