Yes, I checked and permissions are set on download, so that's not the problem. My concern is that there may be some problem on the procedure I follow to link the digital product to actually file stored on server, since it doesn't even give me the download button. As I mentioned before, the file to be downloaded is in 'download' folder under the main root of server, so it's accessible via web. If I try to put file's name in the path e.g. 'download/filename.exe' it shows an error message saying the directory is not readable. Again, from server panel, both 'download' folder and 'filename.exe' have all possible accesses (thing I want to avoid that's why I chose auto-generated download method against external link).