From time to time you need may need to unlink from your Mail Chimp account.
To do this you need to log into your MailChimp account and remove K1 from the API key section.
1. Open your MailChimp account
2. Go to the Account section.
3. Select API Keys from the Extras tab:
Then remove Kitomba One from the Authorised Applications.
You can now go to Kitomba One and reconnect to the required Mail chimp account.