Can you find the ShopSim folder in the Local folder? If not, you may be searching under the wrong User folder. The file you're looking for is Settings.sav, but depending on your Windows search settings, it may not look through the hidden folder AppData to find it.
I'm afraid you've exhausted my (sadly) very limited list of possible solutions. Perhaps when the game is patched, you could try again. In the meantime, maybe check out the community boards Here in case someone else has posted a solution that I have missed. Sorry for the inconvenience.
