Mail chimp not working with coursepress pro

Hi
After following the steps of this solution/link :
(https://premium.wpmudev.org/forums/topic/does-the-coursepress-theme-work-with-mailchimp-integration-or-mailchimp-for-wordpress)
to the problem I have, where user that register to my page do not automaticaly register in my mail chimp list. how do i proceed from here?