You would see this message if you're logged into the wrong miniExtensions account. If you get this error, it means you're trying to access the settings page of an extension that you don't have access to. The extension was set up under another account. Maybe one of your team members.
You would need to log out and log into miniExtensions again with the right account.
💡We don't support multiple user accounts on miniExtensions yet, but this project is on our roadmap.