We use an ESP to send the emails and sometimes, the PDF goes instantly and sometimes upto an hour. If you didn't receive for some reason, feel free to ping me directly. Email in profile.
6 alpha chars @ gmail.com, on Firefox and Chrome on OS X 10.9.5. Really should work; doesn't. Console shows that you're passing an empty string to getElementById at some point.
Note: I didn't downvote you.