When you make a purchase in the Facebook version of the game, a confirmation email with your order information is sent to the email address that you use to log into your Facebook Account.
You can also find your order information in your Facebook account by following these steps: https://www.facebook.com/help/248471068848455
If you need to contact us for a purchase issue, please attach a screenshot of your receipt and make sure that the time and date of purchase is visible.
You can find instructions on how to take a screenshot here: https://www.take-a-screenshot.org/
You can submit a support ticket in the game by tapping the "gear" icon on the map screen, and then "support," or you can open an online support ticket here.