If your rewards progress isn't updated, try reloading the data in the app by pulling down to refresh on any merchant detail screen.
You can also check that you made the purchase with a card registered in the app. Click the menu icon and select Registered Cards to see which credit cards you have registered. If you used a card you don't have in your account, add it, then send us the receipt. You can find a button to do this by clicking on a merchant in your account, going to the "More" tab (or scrolling down if there isn't one), and clicking the button to send us a receipt. Just use your phone to take a snapshot.
Note: Progress will not be added for credit card receipts if you do not have that card registered with your account (this is to prevent us accidentally issuing double progress).