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I believe that you are referring to download all the attached files from a JotForm. I see that there are more than 1000 uploads on your JotForm titled "Masters Champions League 2016". Since there is a limit of 250 files or 250MB of size, if you are trying to download all the files at once you may be experiencing some issues. This information will be provided on your screen after clicking on Download all Uploads button in the submissions view.
So, please select the submissions manually by holding Shift/Ctrl Key on a larger grid to limit the number of files to be downloaded and then try downloading the files.
Hope this information helps! If you are referring to something different or need any further assistance, please let us know. We will be happy to help.