Can't help you, never played that game. POst this on the 12sky forums I'm sure you'll get the answer quickly.
Hi kentaro! I'm new here and i downloaded a game named 12sky. I made my account and i wanted to play the game. So i installed and i selected the server, I typed the username (mack93), but the password says is incorrect. I want to change my password. How can I do this? please help me. Thanks