Just for general information, a channel moderator actually needs to verify that you're an approved member of Elliquiy, which is why !opme doesn't work right from the get go. It only works once you've been confirmed.
Also, the !opme is not really required. It should also automatically voice and invite you shortly after joining the channel. !opme is only for those rare cases where something goes wrong (ChanServ messing up, no operators being present when you joined the room, etc...)