Pretty sure that I lost walls

My town name is Axelton and I have a Sony XPeria Z3. I was dragging a row of walls and I lifted up my finger as the map was scrolling. The walls disappeared and now I'm missing 4 pieces of wall. I can't buy them back, either, because I'm at my limit.

 

Try going into island edit mode and click "Store all". See if that gets them back. I've had will pieces dissappear and they come back after a log off and log back in.

 

That worked. It was annoying to have to redesign my island, but I did get to place 50 walls.

 

Glad they showed up