Why does my card not work despite having credit on it? Aline C. 22 October 2020 09:26 Updated First, please check your card account online and your VIABUY Prepaid Mastercard balance to make sure you have sufficient balance and your card is active. Also, make sure you have verified your identity after activation. Check here how to do this. Then, check if you haven't accidentally blocked your CVV code. To unblock it, click here. Our cards have been tested successfully at all common card readers and cash machines that are approved by Mastercard. Check if your using a Mastercard ATM which chip&pin function enabled. Click here to find the nearest in your area. In some very rare cases, old equipment might still be used, which cannot read current cards. Related articles How do I unblock the CVV ? How can I verify my account and upgrade to IDV2 ? How is VIABUY applying GDPR? Why is 89,80€ deducted? How can I contact the customer service?