hello there,
Just to tell you that if you have not used your chat for over 21 days the nickname is subject to expiration (deleted)
If is this case follow some instructions:-
1. IDENTIFY with chanserv for to have founder status in your room.
2. register your nickname again.
3. Type in this command /ChanServ aop #ROOMNAME add NICKNAME
This is the auto op command for the chanserv. re enter your room and you should have your @back, then you can proceed to add your ops again.
Or you can just register with chanserv and use the op command. (as stated one message down.)