If you look at the fanmade wiki, I believe people wrote a guide on how to get to him.
Hmmm... Can report it as a bug to the coder here https://blackcatstudiosdev.atlassian.net/servicedesk/customer/portals
Just don't forget your save. Could be an issue or not, but best to make sure since the game needs you interacting with multiple people as that's how time moves on and people advance in their storylines.