According to the notice from Twitter on February, Twitter will no longer support free access to its API. This change will affect users who connected to our game server via Twitter from February 9th. Please consider to bind your account with other platforms.
To change your connection, please go My Account/ Connect Account, and select a new platform (Apple/ Facebook/ GameCenter). You can also login via your Player ID and password.
For more about account setting, please check here
Please contact to our service once you have any questions about your account. Thank you for your support.