My download links give a 404 error, the file route does not work because it creates a folder called “download”, the download link works correctly when changing the route, but I do not know how to edit it. Thanks for your help.
The URL’s was not working due to htaccess rules or something else related to your server, however, I modified download link code little bit and now they are working fine. Please check here: http://biometaldemo.eu/wpdm-test/.