So for the kitchen, I moved the cabinet above it and it started still wasnt routable. Same deal with the window in the bathroom. Then I realized something: in both the bathroom and the kitchen I had the lights from Parenthood, the ones that look like mason jars, and then I moved those and the sinks started to work! I then tried to put the window back above and the cabinet and they didn’t work again
So what I have noticed is that those lights from parenthood (and possibly other lights) when placed near sinks makes them not work and to Sims they are unroutable. Same goes with anything being placed over the sinks. This is brand new for me since the last update, I have never had this issue before.