RESPONSE: Postcode not found

Hi!
I installed an DHL plugin and use test credentials:

SiteID: CIMGBTest

Password: DLUntOcJma

https://awesomescreenshot.com/0e369gtn77

and get always response – Postcode not found. Expected formats: <country specific post code format>

debug data:

DHL REQUEST:

<?xml version="1.0" encoding="UTF-8"?>
<p:DCTRequest xmlns:p="https://www.dhl.com" xmlns:p1="https://www.dhl.com/datatypes" xmlns:p2="https://www.dhl.com/DCTRequestdatatypes" xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="https://www.dhl.com DCT-req.xsd ">
  <GetQuote>
    <Request>
		<ServiceHeader>
			<MessageTime>2017-03-10T08:38:26</MessageTime>
			<MessageReference>1234567890123456789012345678901</MessageReference>
			<SiteID>CIMGBTest</SiteID>
			<Password>DLUntOcJma</Password>
		</ServiceHeader>
    </Request>
    <From>
	  <CountryCode>GB</CountryCode>
	  <Postalcode>10027</Postalcode>
    </From>
    <BkgDetails>
      <PaymentCountryCode>GB</PaymentCountryCode>
      <Date>2017-03-10</Date>
      <ReadyTime>PT10H21M</ReadyTime>
      <DimensionUnit>CM</DimensionUnit>
      <WeightUnit>KG</WeightUnit>
      <Pieces>
		<Piece><PieceID>1</PieceID><PackageTypeCode>BOX</PackageTypeCode><Height>30</Height><Depth>100</Depth><Width>40</Width><Weight>20</Weight></Piece>
	  </Pieces>
	  
	  <IsDutiable>N</IsDutiable>
	  <NetworkTypeCode>AL</NetworkTypeCode>
          
	  <InsuredValue>100</InsuredValue><InsuredCurrency>GBP</InsuredCurrency>
	  </BkgDetails>
    <To>
      <CountryCode>GB</CountryCode>
	  <Postalcode>WC2N5RJ</Postalcode>
    </To>
	
  </GetQuote>
</p:DCTRequest>

DHL RESPONSE:
<?xml version="1.0" encoding="UTF-8" standalone="no"?><res:DCTResponse xmlns:res='https://www.dhl.com' xmlns:xsi='https://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation= 'https://www.dhl.com DCT-Response.xsd'><GetQuoteResponse><Response><ServiceHeader><MessageTime>2017-03-10T09:39:17.859+01:00</MessageTime><MessageReference>1234567890123456789012345678901</MessageReference><SiteID>CIMGBTest</SiteID></ServiceHeader></Response><Note><Condition><ConditionCode>3024</ConditionCode><ConditionData>Postcode not found. Expected formats: <country specific post code format></ConditionData></Condition></Note></GetQuoteResponse></res:DCTResponse>

Can you help me?