On your computer: 

  1. Go to the Masked Card section. 
  2. If you have not added your Card, add it by following these instructions. 
  3. Click the Verify Card button. 
  4. Enter the verification amount. 

After that, you should be able to create a Masked Card by clicking the '+ New Masked Card'. 

On the app: 

  1. Add your card information via the Settings section. 
  2. Add your Billing Address. 
  3. Verify the Card.