What is going on?

Does anybody know why my game is glitching like this and how to fix it?

Also when I went to one of my houses almost all my furniture was gone and the remaining furniture was in a pile on top of each other and there was random items floating in the air, only on the 2th story for some reason.. and most of the items I got from free gifts that was in the house are gone and not at the post office even when I deleted and rebuild the house. Would reseting the game fix this?