It's pretty simple!
> Mobile App: On the payment page click on 'Enter Offer Code' under 'Unlock Offers or Apply Promo codes' and enter the WinPin code and click on 'Apply'
> Please refer the below screenshot for reference
> Only one WinPin voucher can be redeemed in a single transaction at a time.
NOTE: For the Winpin codes received from bank, we suggest you to check the T&C of it because the voucher codes are locked to the card against which it was offered. The remaining payment has to be done with the same card and you are though.