It is an all-in-one marketing platform that helps you to manage and talk to your clients, customers, and other interested parties. WPLMS Mailchimp plugin integrates Mailchimp with WPLMS. With this addon you can use the mailchimp features with wplms
Add the Key, which you will receive after purchasing the addon in LMS > Addons and you will receive the updates.
The video is a bit old but the steps are same