And i found some not working option more:
i have server and 2 accs for tests. and i cant register second acc with that config string:
// How many accounts are allowed per ip-addres. Use 0 to disable it
when i try to register my second acc i have feedback message in game chat about cant register more accaunts on that IP.
when i change to maxIpReg=50 all working fine (until i will try regester 51th acc i think)