can't download any files from your site!

I am not able to download any zip files or jpg etc from the answer section of the site. Ex https://premium.wpmudev.org/forums/topic/how-to-have-the-home-page-be-the-list-of-questions#post-209737
I can't get the zip file! What is up with that. Please email and let me know. Thank you. Leah