The save option isn't saving, but deleting player-created houses.

These are the images from the game. The first and second one shows that there should be a house on the lot and what the challenges are. When you click on the lot, as shown in Pic 2 (smaller image), the house disappears and has to be rebuilt, as seen in the top picture. I'm not sure what's going on.  These images go with the original request above.