a week ago
Can you use Mastercard for what?
If you want to pay the seller directly you will have to ask if the seller accepts it.....it will probably be available only if the seller has a retail store.
You can use a credit card through paypal as a Guest and also attach a credit card to your paypal account, which is what I would recommend. It gives you themaximum level of prtoection in the event of a dispute.