had same problem this morning
user/pass didn't work; spammed it a couple of times
nickname/pass worked -- got the message "acc temp locked"
i messaged support, got a ticket number
tried to log in a few hours later -- worked!
(felt bad about spamming the support with that e-mail)
then went to Poker770 webpage, opened FAQ and read that if you fail the login 3x they lock your acc for 30 mins
probably a combination of some maintenance on their part + that 30 min rule
so, no one worry! ^^
cheers 
edit: oh, it still hasn't worked for you.. my advice: wait for an hour ^^ good luck!