Yup, that's why they asking transaction message/mail details to verify manually.Wait 3 working days.
I think many users are start buying. Normally payment will settled within 2-3 days. These small websites/apps dnt have crores of rupees to invest on zingoy RuPay gift card loading, i guess they are waiting for payment settlement and then loaded money on your Zingoy RuPay gift card.