Card:
To update or change your linked card, please go to the My Account > Billing page.
In the Invoice section, click the Change Card or Manage Payment Method button.
PayPal:
If you want to update your debit or credit card on PayPal, click here.
Switching directly from PayPal to a card is not supported. You will need to cancel your subscription first, then resubscribe using your card after your current subscription expires.