We are not sure whether you mastered Mailchimp or you have never heard of it before. Therefore, prior to beginning to read this How-to document, please consult this source to learn more about Mailchimp:
In order that the MailChimp section can be displayed in footer of your site, please make sure that you do 5 following steps; however, if you had a Mailchimp account and created a list, you can skip step 1 and step 2 and proceed to step 3:
Step 1: In Admin panel, go to Customizer> Site enhancement >MailChimp Settings > click the blue line to register an account on MailChimp.
To learn more about creating MailChimp account, please consult this source:
To learn more about creating list, please consult these sources:
Step 3: Go to this link: https://us11.admin.mailchimp.com/account/api/. After that, you will create a Mailchimp API Key by clicking Create a Key button.
Step 4: Copy and paste the API Key you have just created into MailChimp Settings box. Then do not forget to click Save and Publish.
Step 5: Please go to Appearance> Widgets> drag NooMailChimps widget to NOO – Footer Column #3 > click Save.
Note: We strongly recommend you should check step 2 and 3 (Create a Mailchimp List and API Key) carefully because there are many customers usually miss those two steps, which triggers problems with their Mailchimp.