Bro its not a gift card, samsung pay is fooling. Also amazon pay gift card is special type of gift card which has limit to be used in one account.You will get 40% discount on bookmyshow. You will see having a promo option just above the payment promo...

Hey bro its a promo code . From now I will only do it for amazon pay gift

I got bookmyshow gift voucher but on the bookmyshow it is showing as invalid

@moderator ?

You have installed magisk a rooting app