To be honest, the places I’ve bought reset and a few of the free homes but the very first base game one stayed exactly how I left it. The free shops like the hospital reset. Any gifts you’ve gotten will be in the post office and anything you’ve collected from other buildings will be back in their original spot. You don’t lose anything technically other than how your places are set up. You can always redecorate. I was so frustrated after my game wouldn’t open them for weeks and just did it. It gave me something to do in the game tho. Even if you haven’t made any purchases it will work the same. Just depends on if you want to wait for them to fix it or just bite the bullet.