Its plain and simple
For every order irrespective of the value you get 2% cash back only for UPI transactions.
Why only for UPI --> since money comes from your bank account to ours without 3rd party involved.
There is no payment processor or visa or mastercard hence no additional fees for them.
You must select 2% cash back while placing the order , you cannot pay using upi option after selecting online payment option.
offer is applicable for all transactions if the money is transferred from customer bank account to our bank account.