How to unblock UPI without debit card?

To unblock a blocked UPI ID, the most direct steps are contacting your bank's customer support or using the customer care feature within your UPI application (like the Paytm app). Often, a quick fix is to reset your UPI PIN. If your bank supports Aadhaar-based UPI setup, you can typically reset your PIN using your Aadhaar card details instead of a debit card.