How do I unblock the CVV ? Aline C. 20 November 2020 11:26 Updated In your online account go to "Settings" (click on the Gear Icon above the image of your card) Click on Unblock CVV. Follow the instructions on the screen. *Note: this function is available on browser only. Related articles How can I verify my account and upgrade to IDV2 ? What is the CVV/CVC code and where can I find it? How do I unblock my pin code? Does the VIABUY Prepaid Mastercard support 3D secure? How long is my VIABUY Prepaid Mastercard valid?