Can’t click on my Sims or do anything

@ragingredfox Hmmm.... Interesting. Good detective work - and thank you for trying! In such cases it is good to do these steps first to make sure that the mods and cc and all of their potential effects are no longer part of the equation.

I actually had some buggy issues with that lot at one point, but I think in that instance I was overloading the lot a bit... and maybe pushing it's intended use with some of the things I was doing. (I made it a restaurant - a pretty involved one - plus had a large household who owned and ran it living there almost all of the time (though they had a home, as necessary.) Anyway, I had a number of buggy issues pop up then. If you would like to still have that lot for the family you could try starting a new, fresh save and uploading the penthouse from the new save into your library then downloading/overwriting the buggy one in that save you wanted to play it in, save it, then try moving your family in again and seeing if the issues have gone away.