Help error 300 after maintenace

[Siriel]

Hi, I need some help here I was able to play perfectly fine before the last maintenance but now when I try to Log In from the characters selection screen the game keeps given me a message 

"Disconnected from server. (300)"

I don't know what to do, I Clicked "File repair" also made a clean re-install but didn't fix it :c

Can someone help me pls :)

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[ojix]

i canot log in my alt too =( i still can play in my main whit no issues