There is a mission starting from the Spanish Fortress, where you end up searching for a treasure.
Oh, important thing: I am using the free roam mode (no specific marker on the map when you are looking for a specific location).
At some point, you are asked to find a "pirate's camp", located SE of Mocha D. Heights (Wild Coast).
This place should be described in a different way, unless the pirates we are talking about date back to an age before C. Columbus... I have spent many hours looking for a place that was not marked anywhere on the map (beware: I was looking for something with the words "pirate" or "camp").
At the end I gave up and looked at YT, only to realize that I had passed nearby the location multiple times, but unless you are <15 meters away, no marker will highlight that place.
And that place was a bunch of ancient carved stones, nothing really resembling a "pirate's hideout".

After that, when you have deciphered the code, the name of where to start your search should be written in a clear way: for those whose English is not their native language, or worse they are not even familiar with, it can be really troublesome.
It's ok if you don't want to mark the exact spot on the world map, at least write the name so every player can spend the time looking for the place with that name instead of translating it (and maybe even adapting it!).

Finally, the reward was totally lame. You should really give there something more than Skell Kreds! Actually, someone should explain us how a modern crypto-value has been stored in an ancient place like the one where you find the pirate treasure!