I suspect that might be the problem (or at least related to it) since that's something I've never done.
There's very few things you "have to" do in this game other than go through the motions. But turning certain fetishes off is obviously going to throw a wrench in the system.
Chastity is an integral part of this game and not letting it happen is going to have unforeseen consequences. I'm sure this is something the devs are working on and it may be helpful to drop a save file on broken scenes whenever
sashkah is online.