Yes.
There are only 2 rules related to it:
1) Oly for 1 month
2) Oly in Friday and Saturday
This month there are 5 times will be Friday and Saturday, so 5 times you will fight on oly.
You entering with E-mail + pass or ingame login + pass?
Also try to enter on web with ingame login + pass.
http://l2classic.club/forum/topic/15318-how-to-recover-game-account-password/
Hello. Contact me at skype: koll.classic, but as I understand after you entering acount + pass info it's stuck telling you "logining in" - which means that connected to IP and Port are blocked.
Hello. You trying to login with incorrect info. Try to login on web with same info.
http://l2classic.club/forum/topic/15318-how-to-recover-game-account-password/