Auth2 Facebook

Mistake Invalid Scopes: Email. This message is only shown to developers. Users of your app will ignore these permissions if they are present. Read the documentation on valid permissions at: https://developers.facebook.com/docs/facebook-login/permissions

TL;DR

The user is asking about the login limit for Auth2 Facebook. Someone suggests that it could be 50 requests in an hour per IP. The user also mentions a link that might be helpful but couldn't find the information. Another person suggests checking the email permission mentioned in the guide. The user then realizes they made a mistake with the invalid scope. The solution is to read the documentation on valid permissions at the provided link.