Works just fine on my end, so whatever issues you have are probably specific to your computers...
Thx for the answer. then again, my client can't see the pdf option, i tried in three other computers. same results. any other suggestions?
This is a bug. See my response to a similar thread here Re: Sharing PDF with client.
The workaround for now is to have your client sign in with a free Adobe ID. Then the PDF option will be available for download.
Issue fixed on Production. Users who are not signed in should now see the option to download PDF files that are public.