i found this link that explains some of what is happening. maybe find your ship on the list and try again after it rolls out.
https://www.facebook.com/share/p/xZsjKGFx3eT83Pzs/?mibextid=9z1EC3
we are booked for March 2025 also and see the same sold out listing as you. I have been checking everyday to see if it opens up. My last 2 cruised i was able to book on the first day of the cruise.