Thank you for reaching out to the community!
The Facebook Join My Mailing List application is designed to only be added to business or organization pages. I am sorry for any inconvenience this has caused you. I recommend that you add this to a Facebook page and ask people in your groups to visit this page to sign up. This would be a great way to direct traffic to your organization's Facebook page!
Please let us know if there is anything else we can do for you.
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