How do I cancel a receipt submission?

For those using the following CoinOut app versions or older:
iPhone: 3.1.44 (530)
Android: Android - (1.385-production)

To cancel a receipt submission:

1. Locate the receipt transaction in the receipt log.
2. Tap on the Action button.
3. Tap Cancel Receipt. 

For those using the following CoinOut app versions or later:
iPhone: 3.1.46 (542)
Android: Android - (1.413-production)

You do not need to manually cancel a receipt submission anymore. We implemented an improved receipt detection system that will process and cancel receipts appropriately.