Mailchimp integration not working

Using mailchimp with popup. It displays successful however no new contacts are being added to my list. The API log in Mailchimp is showing successful.
2015-07-14 18:33:14 GMT nope 72.167.190.181 lists/interest-groupings json 0.016s MailChimp-PHP/2.0.4 2.0 n/a
2015-07-14 18:33:14 GMT nope 72.167.190.181 lists/list json 0.046s MailChimp-PHP/2.0.4 2.0 n/a
2015-07-14 18:33:13 GMT nope 72.167.190.181 helper/ping json 0.01s MailChimp-PHP/2.0.4 2.0 n/a
2015-07-14 18:33:11 GMT nope 72.167.190.181 helper/ping json 0.011s MailChimp-PHP/2.0.4 2.0 n/a
2015-07-14 18:33:08 GMT nope 72.167.190.181 lists/interest-groupings json 0.016s MailChimp-PHP/2.0.4 2.0 n/a
2015-07-14 18:33:08 GMT nope 72.167.190.181 lists/list json 0.052s MailChimp-PHP/2.0.4 2.0 n/a
It was showing errors prior to adding a group to the list. Throwing a 211 error.
I get a successful message on the form but de nada in mailchimp.