[SOLVED] Facebook login stuck on other devices than mine

Hi, i added Facebook login to my app following this tutorial:

Unfortunately it does work on my emulator and on my device, but on other devices than mine the login popup disappear immediately after a quick loading and doesn’t show the “acceptance” view at all.

Don’t know what to think, seems like a permission issue, but can’t figure where to start.

Thank you in advance.

EDIT: I’ve added some friends in “testers” section under “roles” in my Fb app: https://developers.facebook.com/apps/***************/roles/ … now it works but only if users I added are already logged in. I obviously wish to open to everyone the possibility to login with Facebook, not only my authorized friends.

EDIT: solved: I didn’t know that I must flag my Facebook app as “public” under “App Review”. Sorry for the newbie issue.