Where can I locate the transaction id number of my purchase?

Receipts for purchases made through our app will be sent to the email account associated with whichever app store Stardust was downloaded from (either Google Play or Apple’s App Store) immediately after making the purchase. You will have both the receipt number which is a 12-digit ID number that starts with a 172 number, and the Order ID which is alpha-numeric. You can also provide a screenshot of the receipt for us to better assist you with your inquiry.