Usually, incorrect card details will show in the transaction list with an error regarding expiration or CVV. However, if a digit is incorrect in the card number, we will not receive that data.
Your card detail fields are copyable. Simply click on each field to copy it, then paste it into the merchant fields to ensure the details are correct.
Also, of course, ensure that the balance on your card covers the cost of the purchase. If it doesn't have enough balance, it will show in the transaction list.