App Invite not showing notification to friends in facebook

I have integrated the facebook sdk in my android unity project and also created facebook app and configured it according to the facebook docs but still after sending app invite to a friend no invite is received.

Answering my own question
I had forgotten to make my facebook app live or public therefore it was not working

I’m having the same issue. My app is LIVE and PUBLIC on facebook, however, still no invitation seems to be sent out.

My code is:
public void InviteFriends() {
StartCoroutine(InviteFriendsRoutine());
}

IEnumerator InviteFriendsRoutine() {
    if (!IsLoggined()) {
        Question.main.Ask(
                    LocalizationAssistant.main["question_invite_text"],
                    LocalizationAssistant.main["signin"],
                    LocalizationAssistant.main["cancel"]
                    );

        while (Question.main.Wait())
            yield return 0;

        switch (Question.main.GetResult()) {
            case 0: // Sign in
                yield return StartCoroutine(Connection(true));
                break;
            case 1: // Cancel
                yield break;
        }
    }

    if (IsLoggined()) {
        FB.AppRequest(
            message: LocalizationAssistant.main["invite_text"],
            title: LocalizationAssistant.main["invite_title"]
        );
    }
}

Do I miss sth here? Thanks.