Webservice fast license manager not accepting request

I want to use Quick License Manager SOAP webservice to connect e-commerce wordpress plugin to allow user to buy license and show it after successful purchase.
So now I am trying to call the GetProductInfo function to get information about an existing product that I created using the QLM Management Console.
I am using the PHP SoapClient class, but when I try to make a request, I get this response:

Validation request: The input is not a valid Base-64 string because it contains a non-base 64 character, more than two indents, or an invalid character among the padding characters., Caller: GetProductInfo

I don't understand what happened to my request, so I need help ... Here is the code I'm using:

$url = "https://quicklicensemanager.com/****/qlm/qlmservice.asmx";
$wsdl = $url . "?WSDL";
$soapClient = new SoapClient($wsdl, array(
    "encoding" => "utf8",
    "trace"    => TRUE,
    "version"  => SOAP_1_1
$req = sprintf(
'<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
    <QlmSoapHeader xmlns="http://www.interactive-studios.net/qlmweb">
    <GetProductInfo xmlns="http://www.interactive-studios.net/qlmweb">
</soap:Envelope>', "en_US", 0, "The IO plug-in: Student License", 4, 1, 0);
echo '<pre>';
echo '</pre>';

$action = "http://www.interactive-studios.net/qlmweb/GetProductInfo";

$res = $soapClient->__doRequest($req, $url, $action, 1);

echo '<pre>';
echo '</pre>';
echo "=======================================================";
echo '<pre>';
echo '</pre>';
echo "=======================================================";
echo '<pre>';
echo '</pre>';


Thanks in advance for your help.

EDIT Now I tried to change the product field id and it seems that this is the one that was wrong. So it should be a base64 string, so I updated my code:
  </soap:Envelope>', "en_US", 0, "The IO plug-in: Student License", 4, 1, 0);

becomes</soap:Envelope>', "en_US", 0, base64_encode("The IO plug-in: Student License"), 4, 1, 0);

New error message:

Validation request: The length of the data to decrypt is invalid. Caller: GetProductInfo


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1 answer

After hours of searching, I found this in the documentation , on page 121:

Please note that all methods provided by the web service cannot be called with a URL except GetActivationKey and ActivateKey. All other web methods implement a secure authentication mechanism that only accepts requests from the QLM console.

So, since I was trying to call GetProductInfo, it couldn't work outside of the QLM console.



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