There is a few ways to contact The Lion's Roar:
and contact the person you need to contact in a DM, if in doubt, message Hardhy.
In game mail:
Send a mail to the person you need to reach in game, if in doubt, mail Hardhy.
Face to face:
Find a staff member your character knows of in game and talk to them! You can assume Hardhy Lester is recognizeable by most people.