Your Mighty Network has 4 main privacy options: public, private, secret and paid.
Check out the details for your privacy options in the article, What are the Privacy Options I Have When I Set Up My Mighty Network?
To change your privacy level, go to Network Settings > General and scroll to the section titled Network Access
If you are looking to change your privacy setting from Paid to Public, Private or Secret, check out this article.
Updated June 2023