Can someone help me? No matter how many orders i fail in the bar minigame with Kate she seemingly always has enough money to give to Thomas at the end of the night. So i can't get Thomas to stop blackmailing her and then being able to make the relationship official. So I can't continue with her route.
I've completed a lot of the other content before already so maybe that messes something up? Also I can't return the room key anymore? No idea if that matters.
Personally, I've never had to fail the bar mini-game even once in order to permanently stop Thomas's blackmailing and to progress Kate's story.
I know that at some point in the game, Thomas will approach the MC with an offer - If the MC allows Thomas to continue his abuse of Kate, then the MC can permanently stay in the inn for free.
So considering that in addition to not being able to permanently stop Thomas' blackmailing, you also can not return the inn room key to Thomas, you mostly likely chose at some point to make that deal with Thomas.
Don't know if there's any way to reverse this since I've never chosen this route, personally.
To progress the NTR route, maybe try failing
A LOT of bar mini-games in a row (like 50 or more).
In addition, try stealing from Thomas's chest every week.
The MC always notes how stealing from Thomas could get Kate into trouble.