Can't Log in again in any server

Game mode: Online/ PVE/PVP
Problem: Bug
Region: [South America]
Server No. 3985 / 3995 / 3980

its been 3 days now.
I can log in a new server, creat and play, but if i logoff, i cant return to it… odd.
thats not right. i bought it. i liked it so much and i cant play.