Scratch Cards
Site admin can add coupons from admin panel. we have added custom meta field for send push notification coupon wise to mobile application users. for more details how to add coupons please check woocommerce Coupon Management live Doc.
https://docs.woocommerce.com/document/coupon-management/
iOS and Android App
Once you add coupons from the admin panel, CiyaShop mobile app will show in under Account page My Coupons option. Once you click on Coupon, it will open Scratchcard as shown in below image.