Your TA should deal with it. It does take some time usually, I was told they cancel, charge a cancellation fee, return that fee as FCC. When you use cruise/ cancel with confidence policy.
we did not get all of our FCC back at the same time. Also part of it shows up in cabin mates account.
it is frustrating trying to hurry this up.
i don’t recommend payment in full as that is a longer delay in switching to FCC.
your TA earns $ to take care of this.