Well, I was not able to download it with Firefox 47.0.1, following a link or pasting the download URL to address bar.
I had tried to download it with Chrome, without luck. But now I get success with Chrome following a link. But pasting download link to address bar does not work.
The same with IE 11: can download by following a link.
Ok, that was related to referrer header. The download does not succeed if referrer header is not sent. Probably wholetomato.com is expected as referrer? My Firefox is configured to never send referrer header. That was the reason of the issue.