I believe this happened to you because of the recent resets. They had been having problems with some hardware and data and such. When they had to reset, they went back about a week. So everyones loot, new pirates, or such, was reversed and taken away. If you e-mail them, I'm sure they'll be glad to bring it back. Just be sure to include you pirate name, your level, and your D-name.
Glad to help.