Redirect to external link instead of downloading file

Hi everyone,
Thank you so much for providing such a helpful Plugin for us WordPress users first ^^
I just had question concerning the download links, because when I put my external link on the File URL’s box, I’ve done everthing and installed the Downloading page etc.. When I click download, a file without extention starts to get downloaded on my computer, instead of the webpage gets redirected to real download page which I pointed its link on File URL’s box.
So this is it, because I’m going to just refer to download pages, I’m not hosting anything to the website.

So I just want to link to get redirected to the page, and not start downloading.

Thank you for your support.