And if I upload a zip file within the package page – it uploads the file to the following path:
/full/path/to/public_html/wp-content/uploads/download-manager-files/file_i_uploaded.zip
That file is definitely there, so uploading is working. And if I browse directly:
https://mysite.com/wp-content/uploads/download-manager-files/file_i_uploaded.zip it will download without issue.
But on the package download page, once again nothing happens when clicking download.