Payment of subscription method
It's unclear exactly how ZipPay works by visiting their website, but it appears to fall under the prepaid/virtual credit card category which is not accepted. You can get more information from the Azure pricing FAQ:
Purchase Azure by using a credit card or opting to receive a monthly invoice. We don’t accept prepaid or virtual credit cards. There may be a delay before discounts are reflected on your bill. You are solely responsible for any credit card interest or other credit card charges. If you choose to pay by invoice, you can’t switch to the credit card option. For more information, explore our purchasing options.
While you will need a credit card for verification purposes, the monthly invoice option provides additional options:
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