"Kount IO error" - Servidor TEST

Servidor de testes retorna sempre "Kount IO error".
Esse comportamento foi detectado inicialmente há cerca de 3 semanas atrás. Antes disso estava funcionando normalmente.
Em ambiente de produção (LIVE), a biblioteca está funcionando corretamente.

PHP Version 7.3.25 Script para reprodução:

        $api = new maxiPago;
        $api->setCredentials(*****, ***********************);
        $api->setEnvironment("TEST");
        $api->setDebug(true);

        $data = array(
            "processorID"   => "1", // REQUIRED - Use '1' for testing. Contact our team for production values //
            "referenceNum"  => 1, // REQUIRED - Merchant internal order number //
            "chargeTotal"   => 20, // REQUIRED - Transaction amount in US format //
            "bname"         => "João da Silva Santos", // HIGHLY RECOMMENDED - Customer name //
            "number"        => "378282246310005", // REQUIRED - Full credit card number //
            "expMonth"      => 12, // REQUIRED - Credit card expiration month //
            "expYear"       => 2024, // REQUIRED - Credit card expiration year //
            "cvvNumber"     => 123, // HIGHLY RECOMMENDED - Credit card verification code //
        );

        $api->creditCardSale($data);
        echo $api->getMessage();

Resultado:

--------------------
[2022-11-07 13:11:00:32050] Target URL: https://testapi.maxipago.net/UniversalAPI/postXML
--------------------

--------------------
[2022-11-07 13:11:00:34400] XML Request: <?xml version="1.0" encoding="UTF-8"?> <transaction-request><version>3.1.1.15</version><verification><merchantId>****</merchantId><merchantKey>**********</merchantKey></verification><order><sale><processorID>1</processorID><referenceNum>1</referenceNum><billing><name>João da Silva Santos</name></billing><shipping/><transactionDetail><payType><creditCard><number>378282246310005</number><expMonth>12</expMonth><expYear>2024</expYear><cvvNumber>123</cvvNumber></creditCard></payType></transactionDetail><payment><chargeTotal>20</chargeTotal></payment></sale></order></transaction-request>
--------------------

--------------------
[2022-11-07 13:11:00:34403] XML Response: <?xml version="1.0" encoding="UTF-8"?><transaction-response><authCode>123456</authCode><orderID>0A0104B1:018452FD0FCC:D06E:01FD6D16</orderID><referenceNum>1</referenceNum><transactionID>13917869</transactionID><transactionTimestamp>1667839627</transactionTimestamp><responseCode>2</responseCode><responseMessage>VOIDED</responseMessage><avsResponseCode>YYY</avsResponseCode><cvvResponseCode>M</cvvResponseCode><processorCode>ERROR</processorCode><processorMessage>Kount IO error.</processorMessage><processorName>SIMULATOR</processorName><creditCardBin>378282</creditCardBin><creditCardLast4>0005</creditCardLast4><errorMessage>Unable to contact kount.</errorMessage><processorTransactionID>828683</processorTransactionID><processorReferenceNumber>1092462</processorReferenceNumber><creditCardCountry>US</creditCardCountry><creditCardScheme>Amex</creditCardScheme></transaction-response>
--------------------

--------------------
[2022-11-07 13:11:00:34403] Response time: 1.099 secs.
--------------------
Kount IO error.

maxipago / sdk-php

"Kount IO error" - Servidor TEST #19