i am trying to play the online rpg called hero but it

[Carson Z]

keeps saying"server maintenance, please check firewall.. i am trying to play the online rpg called hero but it keeps saying"server maintenance, please check firewall and network settings, please try connecting again in a moment." i already configured my firewall and even turned it off completely but i cant get it to work. please help, really irritating.
i have norton internet security so i dont use the windows firewall, and iv tried turning my norton firewall off and checked my windows firewall to make sure its off.