Can I make online payments using my Visa / Mastercard debit card?

You can use your Visa Debit / Mastercard Debit to make online payments. 

Can I make online payments using my V PAY / Maestro card?

You cannot use your V PAY or Maestro card to make online payments. If you want to make online payments, you will need a credit card, prepaid card or UBS TWINT.