I've done all the main story and sidequests so far (excluding trying to get every medal), and I worked really hard to save up enough money so I could get Buccaneer's Den. I finally bought it and equipped it, and it DOESN'T WORK!!! It does that "this area isn't ready for your adventure yet" message! It's totally unfair! I did all that work for nothing! It shouldn't be in the crown shop if you can't use it!!!
The first time you enter a new area it needs time to load the area to your computer. Is the problem you are having one that continued for more than a few minutes, or however long your computer takes to load a new area?
Maybe it just needs to load. Calm down and give it a little time to load. If that doesn't work then contact costumer support. I have contacted them several times and they have always been more than helpful. Trust me, this will be made right.