What is the principle of gift cards?
Choose the amount you want to offer and proceed to purchase.
At the time of checkout, be sure to indicate the email address of the person to whom you wish to offer it. Because, indeed, once your order has been placed, an e-mail containing a unique code linked to the gift card will be sent to it.
If this is not possible: enter your own email address and share the code with the person to whom you wish to offer it.
The latter will therefore be able to apply the code (in the "Gift card" section) at the time of payment to benefit from it.
the Prophet May God bless him and grant him peace a dit:
"Give yourself gifts then you will love yourself"
[Reported by Bukhari in Al Adab Al Moufrad n594 and authenticated by Sheikh Al Albani in Sahih Al Adab Al Moufrad n462]