Ultimate Member Mailchimp is developed by Ultimate Member. You can download the version 2.4.0 for $5 or have it for free if you subscribe to a monthly plan.
Ultimate Member Mailchimp is the SAME file as the original one (nulled version) developed by Ultimate Member. The last update of August 23, 2022 comes with new features and known bugs have been fixed.
For more information, click here to visit the developer page of this Ultimate Member Mailchimp.