Sweet Tooth Town problem

@maggieonemae, To start playing at the Chocolate shop or at any other shops, you need to go into the construction mode by clicking on the construction crane icon in the upper left corner of the screen. Then when in the construction mode buy the shop where you want to play. You will see a construction site symbol with a construction worker at the places where shops can be constructed.

The chocolate shop is built from a construction site near the bottom of the screen. See the screen shot of the game I've added to see where the Chocolate shop is located. Build a shop there. You will see the construction site at first.  After you buy the chocolate shop, the construction site will turn into the Chocolate shop. 

There is a cost of a certain amount of chocolate coins to construct each shop. The game will tell you how much you need for the chocolate shop when you try to build it. If you don't have that many chocolate coins, you can go back to games not yet having 3 stars to win more coins by winning with more stars. Or you can buy the chocolate coins from the game using gems. To do that click on the plus sign in the green square at the top right corner of the screen where you see the coin symbol.

The screen shot below has an orange square placed around the construction crane and the chocolate shop to make them easier to find.

After you build the Chocolate shop or whichever shop you want to build, you will need to return to the Game mode.  To do that go to the upper left corner of the screen where you saw the construction crane.  Now you will see a different symbol with a rotating arrow, meaning use this icon to return to the Game mode. Click on it and you will be able to play the games again.