@natalier98
UI Cheats has been updated so you'll need to grab the new version if you haven't already.
If your save still shows the same problems after you do the repair and create the new user folder, take a look at all your worlds to see if you spot any lots with an exclamation mark in a green or orange triangle. What you've described matches some of the symptoms of a bug that's been around for a while and seems to hit people randomly out of the blue. It can start well before you find it if you don't check on all worlds on a regular basis. Basically, what happens is the lots show on the map but disappear when you load them, and the sims will be standing out front. After that, you can't place another build on that lot or if you can, can't set a venue type for the lot. You can't even move the sims to a new lot via the normal methods. You can save the sims from those lots by going to CAS from Manage Households, but chances are they will be corrupt and unusable. This bug is especially nasty as it corrupts the save. Any lots that were affected are simply gone for good and any sims on those lots will usually be corrupt. You can salvage most of the builds and sims that were not on lots with the problem. But the end result is once you have it, your save is toast and you'll be starting over in a new save. You can read more about it in this post:
[NEEDS SAVES] Orange Exclamation signs over lots / Houses disappear - Answer HQ
Take a few minutes to read through the post and compare it to what you have happening in your save. Hopefully it is not what you have going on.
Hope this helps.
