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JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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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 downloaded successfully of the uploaded files for this form http://www.jotformpro.com/form/62086169481967
Could you please provide us more details about what your issue is?
We will be glad to help you.
I was able to replicate the issue while downloading all the uploads on your form, although it shows like the file is ready to download, the file is not there.
I will escalate this thread to our second level so our developers will take a look to the issue and they will resolve it.
Regarding to your second report about downloading submissions as PDF, I have moved it to another thread, it can be found here: https://www.jotform.com/answers/892856
We will assist you with that as soon as possible.