From what I just read, the two quests you need to have completed are Sylph Management (level 20 MSQ) and The Rematch which looks to be your level 30 GLD class quest. I'd imagine you'd have both of these done though, given your level.

Only other thing I can think of is... perhaps there's a bug of some sort? They did just recently change a lot of things regarding classes/jobs so I suppose it's possible.