Holybeast online login problem?

I have a problem in the game "holy beast online". every time when i am trying to log into the game, everything works fine, but then when when i try to log in the game writes "to start holy beast enter your account name and password from the official website". i logged into the website "ijji", which is the game's official website, and even to "getamped", but it still didn't work! how can i fix it?