Hi there!
I don't really know much about this sort of problem in relation to FFXIV, but what I do know is that experiences in other games have led me to believe that this is the sort of thing that you should file a ticket for, if you haven't already. Chances are a GM could give you those items back if you provide them with proof of purchase or something similar.
You've checked your Mounts window and there's nothing there, right?
The other thing I would suggest is that there's a guy in Ul'dah in the steps of Nald called the Calamity Salvager that's able to reimburse certain account-bound / special items. I don't know exactly what he carries, but you could try checking there too.
I don't really know much about this sort of problem in relation to FFXIV, but what I do know is that experiences in other games have led me to believe that this is the sort of thing that you should file a ticket for, if you haven't already. Chances are a GM could give you those items back if you provide them with proof of purchase or something similar.
You've checked your Mounts window and there's nothing there, right?
The other thing I would suggest is that there's a guy in Ul'dah in the steps of Nald called the Calamity Salvager that's able to reimburse certain account-bound / special items. I don't know exactly what he carries, but you could try checking there too.