The Refund button is only shown when the payment is linked to a Sprwt order (Internal Checkout panel present) and that order is still refundable: its status is one that allows refunds, or the amount already refunded to the card is less than the order total. You will not see the button if:

• the payment has no Sprwt order attached (for example a charge made outside Sprwt, or an old payment whose order was deleted);
• the order is already fully refunded;
• your role is not allowed to view Stripe Payments.

For orders without a Stripe link, refund from the order page under Orders instead. The Digital Wallet option also only appears when the customer has an account and the order has not already been fully refunded to their wallet.