Error When Signing in to Facebook

I have purchased your plugin from Codecanyon and I am encountering an issue. I purchased the abandoned cart plugin and I am encountering the issue below when I log in to Facebook;

Invalid Scopes: manage_pages. This message is only shown to developers. Users of your app will ignore these permissions if present. Please read the documentation for valid permissions at: https://developers.facebook.com/docs/facebook-login/permissions

Please help.