I can’t buy a house for my sims?

So this has been going on for awhile but I went on help.ea.com yesterday to finally try and fix it but the last person to help me told me it was a * problem and that they could not help me any further or whatever. My game used to not let me save my sims but that got fixed but now I can’t buy my sims a house after Create a simz Every lot has this weird warning sign almost and keeps on telling me that “Sims cannot like on non-residential lots.” When I know that it’s a residential lot. It’s like this on EVERY single lot and I don’t know what to do…

Please help…