I am getting emails of .fdf files from my users. When I double-click on these FDF files and they get opened in Adobe Acrobat 9 Pro, it is supposed to fetch a file called submissionform.pdf from our website and then fill it, but Adobe Acrobat cannot seem to download the pdf from our website. I get a prompt saying that Adobe Acrobat is trying to access our website and it needs permission to do so, and I click "Allow" but nothing happens. So I guess there is a problem with the FDF file. What can I do to make sure the FDF file is formatted correctly?