Notify_url is not working for recurring payment

[krishnasrihari]

I have set the notify_url as below, but paypal doesn't send any notification on sandbox, I checked the paypal ipn history, its empty even I cancelled profile on paypal sandbox.

As for paypal checkout api, it should send the IPN notification but it doesn't.

  def client
     Paypal::Express::Request.new PAYPAL_CONFIG
  end

  def payment_request
    request_attributes = if self.recurring?
      {
        billing_type: :RecurringPayments,
        billing_agreement_description: DESCRIPTION[:recurring],
        notify_url: ipn_path
      }
  end 

  response = client.setup(
      payment_request,
      return_url,
      cancel_url,
      pay_on_paypal: true,
      no_shipping: true
    )
  def ipn_path
    Rails.application.routes.url_helpers.notification_url(secret: APP_CONFIG[:paypal_secret], host: APP_CONFIG[:domain])
  end

[nov]

You should ask this kind of questions to paypal developer support, not here.