Regarding Facebook Login
Welcome to the Headquarters. Users who are currently using Facebook as user account login may occasionally experience fail of login. Such situation has been identified as an error on Facebook. Hence, please kindly understand that it is difficult for us to take any measures internally. For users who are not able to login their user accounts with Facebook, Please try to quit the game and re-login again after a while. We will post a further notice once the Facebook error is fixed Thank you.