This T&C is not valid anymore & it must on the Kotak app. It was valid before the Super 811 program. If you had the Platinum card while having a Kotak 811 account, you were supposed to get those 100 each per month.
But, after the Super 811 program, the reward system has been completely changed.
This will no longer work. You will earn only 5% upto 500, along with 3 vouchers worth 100 each. Read this thread for more information regarding those vouchers.
Uninstall the kotak app and download the dedicated Kotak 811 app. You will thank yourself.