My payment failed, but I can see pending payments in my account. What to do? If the money order transfer is incomplete and the Identifier Number On Cash App, you can get your money back by cancelling the pending transaction. Firstly, undo an unfinished transaction. Secondly you should open the clock icon in the lower right corner of the cash register app screen. Consequently, On the Idle tab, click the transaction you want to cancel. You should tap on the three dots "..." when the pop-up window opens. Select "cancel payment" and "ok" to cancel the payment.