"The developer token is invalid" response on the production

[Alexander]

I'm using production environment to request the service (not
sandbox).
The developer token is in the "APPROVED" state. But i'm always getting
the error message "The developer token is invalid".
I have checked the credentials before posting.
Some advise?

Here is the conversation with server.
Request to : https://adwords.google.com/api/adwords/v13/AccountService
<?xml version="1.0" encoding="UTF-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/";
xmlns:xsd="http://www.w3.org/2001/XMLSchema";
soap:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/";
xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/";>
<soap:Header>
<email>real account emal</email>
<password>yyyyyy</password>
<useragent>iPhonePPCEditor</useragent>
<developerToken>approved developer token here</developerToken>
<applicationToken>my app. token</applicationToken>
</soap:Header>
<soap:Body><getClientAccounts /></soap:Body>
</soap:Envelope>

Response:
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/
envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>
 <soapenv:Body>
  <soapenv:Fault>
   <faultcode>soapenv:Server.userException</faultcode>
   <faultstring>The developer token is invalid.</faultstring>
   <detail>
    <ns1:fault xmlns:ns1="https://adwords.google.com/api/adwords/v13";>
     <ns1:code>42</ns1:code>
     <ns1:message>The developer token is invalid.</ns1:message>
     <ns1:trigger>my developer token</ns1:trigger>
    </ns1:fault>
   </detail>
  </soapenv:Fault>
 </soapenv:Body>
</soapenv:Envelope>

Thanks!

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