Disconnect Problem at login

[mallul2005]

i build season 5 version and i got problem when i try login to server..
all links work good but when i press my account and pass i got dc after i press Enter..
please help me to fix that

[MentaL]

[evo1123]

check joinserver log


or check if your joinserver is working

also if the GS is working

also the firewall

also the ports if you got router