In my case, it is not about the network issues. I'm sure about this because my niece and I we share the internet at home, and we both are playing at Tonberry. He can play the game without any problem but I cannot. I've even try to login in my account from his computer and the result is still the same. My account cannot get through the loading screen (Error 90000), while my niece account can login without any problem at all. So I'm sure that there must be something wrong with my account.