Luke When you have the premium membership, you can order multiple cards (first 3 are free). You can choose between Maestro, Mastercard debit, and the Travel card. Which one did you order? The Maestro card is not the same as the Mastercard debit, because Maestro works on the Maestro network, and Mastercard works on the Mastercard network. Most of the world uses Mastercard, but in (western) Europe Maestro is also accepted. In the Netherlands Maestro is accepted almost everywhere, but Mastercard has a limited acceptance. The Travel card is in most cases just a better version of the Mastercard debit.