Here one thing is clear you can cancel only those Cash App payments which are in pending or in progress status. Here below steps is ?
1.To get into the Cash App payment history, press the activity button.
2.From the list of your Cash App past transactions, select the concerning transaction.
3.Now once check the status. If it is showing you pending, tap the three dots icon.
4.After that, tap cancel to stop the payment from getting successful.