The GiveWP MailChimp Add-on allows your donors to opt-in to your organization’s newsletters when they donate. Donors can be added to a specific list and/or group and customizations can be made per donation form.
These are exactly the same files ( Give MailChimp distributed by Give WP , but we dont offer any additional author services like authors support and license keys. If you want to get support, you should buy it from the Give WP, however, we can help you how to activate the plugin. Please do not forget to backup your plugins and themes before starting the update.