WP-leads not displaying on comment form

Hi all,

I just installed WP-leads, set-up integration with a MailChimp list and configured the plugin to show the option on comments only – yet it is not displaying on any of my blog content as you can see here:

Blend Marketing Blog

Any comments/suggestions as to how to fix appreciated. Or recommendations of an alternative method.

Thanks, Phil.

http://wordpress.org/extend/plugins/wp-leads-mailchimp-constant-contact-and-salesforcecom-integration/