iOS Facebook sign in failed

Question

It shows

This app is still in development mode, and you don't have access to it. Switch to a registered test user or ask an app admin for permissions.

But I have made GuGu public under Facebook dev website's App Review tag(Turned on the switch), and it show

Your app is currently live and available to the public.

I may needn't public this app for now, because I just wanna test Facebook sign in with dev account or some test accounts.

Answer 1

You need to enable this option in developer.facebook.com if you want to live your app as below :

Answer 2

转到https://developers.facebook.com- > YOUR_APP-> App Review->将应用公开给YES