On your computer:
- Go to the Masked Card section.
- If you have not added your Card, add it by following these instructions.
- Click the Verify Card button.
- Enter the verification amount.
After that, you should be able to create a Masked Card by clicking the '+ New Masked Card'.
On the app:
- Add your card information via the Settings section.
- Add your Billing Address.
- Verify the Card.