Once you receive your physical card and confirm that it is in good condition (sealed envelope, no visible damage or alterations), go to the "Cards" section within the Midi application and select your new physical card. On the detail screen, you will see the shipping status and the "Activate Card" button. Tap this button to complete the activation and start using it.
Important: The Midi physical card is issued deactivated for security. In the application, you will be able to see the estimated delivery time and a notification indicating that you must not activate it until you physically receive it.