Yes, you are @karthic24, you are right. Knit Pay currently does not support Auto Debit of payment. But customers can manually make the payment to renew the subscription. We are currently not planning to add support for Auto Debit for Razorpay, but we might consider adding this in future. But there is currently no exact date for the same.
If you still need this support urgently, you can contact us using link below. We will share the price for customization with you.