We submitted our proof of ownership and recent statement in January and it was approved within 2 business days.
Regarding your booking, ours is also in August, are you sure you entered 2024 for year, in stead of 24 like we did at first? Does it show that you are "eligible" for all of the Carnival Corp cruise lines in the App? Otherwise your approval of the stock might still be pending.
It should show like this, if you select "Carnival Corp. & PLC" in the main screen of your App.