Paytm allow only UPI payment for Amazon gv purchase.
You can buy Amazon shopping voucher using this card + use 300% Cashback point coupon (300% means 3% cashback).
Paytm is not allow new cards for higher denomination gift voucher purchase, you will get bank declined error.
Here is the trick - Try small denomination like Rs500 or Rs1000, now card otp page will open.
Cancel the transaction or go back option and try now higher denomination like Rs5000 Amazon shopping voucher. This time card otp page will open.