Please note that OS version updates may limit your access to the game.

Under such a situation, you must log in to your Game Center once more from the device settings to successfully play the game.

We ask you to try to follow the below instruction.

1. Go to device 'Settings' > 'Game Center’

2. Log in with Apple ID (In case you are already logged in, log out and log in again)

3.  Completely exit the game and reboot

4. Access the game and log in with Game Center