PayPal IPN listener does not send emails. How to fix?

Question

PHP

There is a local virtual server. A tunnel will be thrown to it through ngrok. Instant payment notification (IPN) is enabled
in the business account settings https://www.sandbox.paypal.com . Address specified. Through the Instant Payment Notification (IPN) simulator, notifications calmly come.

But. create a payment. I get Approved Link. I confirm the payment from the buyer's account. Goes to the confirm page. Notifications do not come.

public function actionPayment(): string
    {
        $paypal = new PaypalForm();

        if ($paypal->load(Yii::$app->request->post()) && $paypal->validate()) {

            $apiContext = new ApiContext(
                new OAuthTokenCredential(
                    '-----',     // ClientID
                    '-----'  // ClientSecret
                )
            );

            $apiContext->setConfig(
                array(
                    'mode' => 'sandbox',
                )
            );


            $payer = new Payer();
            $payer->setPaymentMethod('paypal');
            $item = new Item();
            $item->setName('test pro 1')
                ->setCurrency('RUB')
                ->setQuantity(1)
                ->setSku("testpro1_01")
                ->setPrice(1000);

            $itemList = new ItemList();
            $itemList->setItems(array($item));

            $payerInfo = new PayerInfo();
            $payerInfo->setEmail('адрес@personal.example.com');
            $payerInfo->setFirstName('Достоевский');
            $payerInfo->setLastName('Александр');
            $payer->setPayerInfo($payerInfo);

            $amount = new Amount();
            $amount->setTotal('1000.00');
            $amount->setCurrency('RUB');

            $transaction = new Transaction();
            $transaction->setAmount($amount)
            ->setItemList($itemList)
            ->setDescription("Payment description");

            $redirectUrls = new RedirectUrls();
            $redirectUrls->setReturnUrl("/client/paypal/confirm")
                ->setCancelUrl("/client/paypal/cancel");

            $payment = new Payment();
            $payment->setIntent('sale')
                ->setPayer($payer)
                ->setTransactions(array($transaction))
                ->setRedirectUrls($redirectUrls);


            try {
                $payment->create($apiContext);

                $billingService = new BillingService(Yii::$app->user->identity->id);
                $billingService->createPayment($payment);
                echo "<pre>";
                echo $payment;

                echo "\n\nRedirect user to approval_url: " . $payment->getApprovalLink() . "\n";
                echo "</pre>";
                die;
            }
            catch (PayPalConnectionException $ex) {
                // This will print the detailed information on the exception.
                //REALLY HELPFUL FOR DEBUGGING
                echo "<pre>";
                echo $ex->getData();
                echo "</pre>";

                die;
            }

        }
        return $this->render('payment', [
            'paypal' => $paypal,
        ]);
    }

Maybe I'm not sending all the data?