Re: I cant click in certain areas
@Catgirl423 The first thing to do is to switch between fullscreen and windowed mode to see if it makes a difference. I take it that this problem is present no matter where in the world the game camera is? If not, please be more specific about when this happens.
It's also worth loading a new save in a clean game folder to see if it makes any difference. Drag your existing TS3 folder out of Documents and onto your desktop, and a new one will spawn the next time you launch the game. Whether the issue is still present in the new folder will help narrow down the cause.
Beyond that, it might help to look over a dxdiag. You can run one and attach the results to a post here (use the Browse button).
https://help.ea.com/en-us/help/pc/how-to-gather-dxdiag-information/