Yes your Paytm QR, Soundbox & card machine will keep working after the 15th of March as well. If your QR code, Paytm Soundbox or Paytm Card Machine is linked to any bank account other than Paytm Payments Bank, you can continue to use this arrangement even after March 15, 2024. If they are linked to Paytm Payments Bank Account, then you will have to link the same to a bank account of another bank. Login to Paytm for Business app for the same.