Impossible to activate Samsung card

I can’t activate my new card because there is no number on it but the curve app wants the last 4 digits.
Can my account be deactivated once I have got the £1.47 Curve cash withdrawn?

This can be found in the Curve app, by selecting the Account Tab and clicking on View card details . You will be asked for your 4 digit passcode or biometric identification. This will enable you to view and copy your 16 digit card number for 30 seconds.