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 did check your form's submission page and found that the uploads are being captured correctly. Please check the screenshot below:
Yes few of your submissions does not have uploads but it seems your users have not uploaded any files while submitting form. Please be noted that both the file upload form field you have in your form is not marked as required field. Please mark the file upload field as required field and that should solve your problem. Please check the screenshot below:
Hope this helps.
Do get back to us if you have any questions.