Crates not showing up on port Murphy(black market)?

I'm having the same issue any help would be appreciated 

Hey there @jaydeyPineapple @nightrider3894 Sorry for the late response. Are you still experiencing this issue? If so, what troubleshooting steps have you taken so far?

Remembering that you need to be with the Aston DB11 to be able to do the challenges.
the image I put shows the location of the boxes, but only 5 are needed to do the challenge.

I'm in the aston martin and still no crates

I was having trouble with this one too, just make sure you got the free Aston Martin on the docks by night, I was trying to do this with a car that I bought on the shop but not the freebie.