Are you sure you haven't changed grand company? Since doing that quest a while a go?
I'm not sure that you have do re-do Squadron and commander. But you definitely have to r do a couple of the early quests when starting one of the other GCs for the first time. And you have to re-rank for that GC. (But you never lose a tank in a specific GC once you have the rank for that GC)
And you may have to re-do Squadron and commander?
https://ffxiv.consolegameswiki.com/w...#The_Maelstrom