Unable to progress on: Escape from Castrum Centri

[Zeerus]

I recently came back to the game and am trying to finish the story. I have worked my way up to "Escape from Castrum Centri" more specifically the part where Cid wants me to talk to him while I have the imperial disguise on. When I approach him with the disguise on, he tells me that I need to have the armor on.
The quest icon is red and has a key on it. A friend suggested that I may be under leveled (even though the quest says level 46), so I did some sidequests and leveled but it still wont update.
I dismissed all pets, chocobo's, unequipped all gear but the imperial items, logged out, logged in... I don't know what I'm missing. Under "Current Main Scenario Quest" only shows "Escape from Castrum Centri" and no other quests.
Anyone have any ideas?

[Dualblade]

Just to make sure, you put on both the head and body slot correct? I also don't quite remember but you might also need to have your headgear turned on for it, instead of being invisible.

[Frizze]

Yeah, for that one all that should matter is that you have the correct armor and hat on. The rest of your gear can still be equipped as normal, and pets/birds/etc shouldnt affect your ability to progress.