[Game won't start after updating? Read this]

hey i need help after game failing to launch after the latest patch was applied it kept saying 903 error. i cant play the game can anyone help please. i want to play this game it a good game.

[Login error]

I try logging on my account but it keep giving me a error No 903 patch server connection failed. The server maybe under maintenance please check the current news update on official site. please help.