You can delete/edit the payment methods.

• Go to the Purchase Tokens page
• Click on any Tokens bundle (you will NOT be charged)
• Click or tap on the "Change Card" link, found under the logo of the Credit Card you have previously used.
• Select the card you would like to delete/edit and then tap on the Delete/Edit link
• Select the “Yes, Delete” button to confirm the deletion or Apply Changes of that particular credit/debit card.