It is sometimes due the File Factory Host or the zip Name I once named a Package tentacle and it got totally blocked.
some even have issues downloading on some hosts due their settings in the browser.
Some members even had their security that strict that they could not access the File Factory host.
so for sure there is nothing to be worried about , just download the Zip and if you feel better check it
with your Antivirus before you open it I am sure that you will not get any warning checking the File