I’ve just done a fresh install of a site and can confirm that I can’t see the attachments after the post content.
Turns out I had published the post without hitting “Save” on the attachments list on the edit screen.
So I can see the list of links on the post, but if I click to download I get a blank screen.
i.e. /wp-content/plugins/download-attachments/includes/download.php?id=5 gives me a white page.