Same
it will unlock automatically , wait for a few day and then a character will show up. If you have already unlock it, push the slave button and the bIacktaiI market is at the bottom right corner.
I tried sleeping for a few weeks, but nobody showed up.
I checked the slave menu as well, but no button for the blacktail market yet.
Go around the level where you sleep it will automatically show up don't use vent
I tried walking around the cellblock, but again nothing happened.
I guess it's bugged or there is some other hidden condition required.
ldk then, maybe you didn't update the game, or maybe you need to redownload the game, or maybe watch videos online that teach you how to unlock it
