Jun 24, 2018, 19:0606/24/18
The first one is "Sea Wolves" and it doesn't give individual rewards for level 6, according to Plarium's P:ToF wiki.
The second one looks like "Captains of the Black Flag" which should give 10 pearls for level 5. Did you already receive that reward in some other BH before this one? Each reward can be collected only once (not once per BH).