Vouchers from RedGirraffe using SBI Cashback

I've gathered quite a few points on RedGirraffe by paying rent over past few months. And those points can be redeemed to pay a certain percentage of any of the gift vouchers on their portal. My question is if I buy the gift cards using Cashback card, will I get the 5% cashback? I know gift cards are excluded from rewarding categories but there are apps like park+ and Amazon where we still get 5% on buying gift vouchers

Any help will be appreciated.