Feedburner Feedsmith email subscription not working

I've set up Feedburner for my email subscription but it keeps telling me that it's not.

set up feed at feedburner - check
feedburner email settings activated on publicize tab - check
feedburner feedsmith plugin installed and activated - check
feedburner code installed on any web page (according to feedburner publicize instructions) - check
entered new feedburner ID into space provided on ATO RSS settings page - check
saved new settings - check

What have I missed? When I click on email feed icon on home page, it still says that email subscription is not set up. I've saved and refreshed. Wordpress latest version is updated.

Please help.

Thanks,
Eunice