Cooper Residence w/ 4th Floor

Making some of the premade households have kids so my paras kids can have friends. I had to add a floor to Jason and Sofia's house since they had twin girls and then a son. Idk if the original top floor had a ceiling showing up to begin with, but it doesn't show now. The lot is kind of glitchy when building so I just left it after trying a few simple things that didn't fix it.