I tried access your PDF file through your direct link but and it is not downloading either.
Then I took a working URL
http://catalystjournal.org/ojs/index.php/catalyst/article/view/88
And changed it to ID of article from PDF link you’ve post.
http://catalystjournal.org/ojs/index.php/catalyst/article/view/119
And again it goes to home of your journal. Are you sure this article, and its issue, is available to public access?
Your current issue is “Vol 2, No 2 (2016)”, but in your screenshot is Vol 3, No 1 (2017). Please double check and confirm it is published.
Regards,
Israel Cefrin
Public Knowledge Project Team