It seems to be an issue with nia_alert00 being set to 1 instead of 0.
I encountered the same issue.
Finished all other stories, no codes used.
Changing that value in the save file allowed progress
Only other "issue" I experienced in the playthrough was early on (don't remember when, prior to buying any hotel upgrades) I could:
- Sneak out > Ashley > Go on a date (not normally an option) > ERROR > Gain affection, Gain Sluttiness, Gain +1 in last used position > Returned back to room (same time, same day) > Infinitely repeatable
(I think this has to do with having flags for meeting the 3 set, but not supposed to be trigger-able from sneak out, but idk, i just played it without looking into it)
Great game! Ty for putting your work out there. It was interesting for awhile, then, suddenly, I needed to know where the narratives led!