Did you had a talk with him "Ask about the hunt"? That's the first thing you have to do, then you need to visit the abandoned hut on friday night between those hours
Try finishing all quests for both Bernard and Logan. Logan might be holding you back with his hunt werewoofs quest.
Additionally, I think it was said somewhere that, once the conditions were right, Bernard has to MENTION the hunt in order for the Ask about hunt option to appear, and I think that only happens on certain days of the week.
Bernard is supposed to talk about the hunt right after you mention werewolves about his friend. My older saves where I romanced him are still there, but I've tried going about it the same way doesn't work. I've maxed out the lumberjacks quests and cured the shopkeeper, talking with him every day afterwards and the option still doesn't show. I think it's bugged and just doesn't appear.
Yeah. I changed it recently. I wanted it to be available after the sickness event is done, not after doing the quest but I kinda screw it and it's available only after doing the quest with 10 spectral syrups. I'm going to change it again in 0.17, so it's only after curing Bernard.
The change is because it was possible to meet Bernard in the hut, even if he was supposed to be sick and in bed.