Azure webhttprelaybinding authorization issue - azure

Question

I have stumbled into an annoying azure wcf http relay issue, which i cant seem to be able to solve.
The issue arises when I set the security relayClientAuthenticationType to RelayAccessToken, which makes my endpoints unreachable due to a "Invalid authorization header: The request is missing WRAP authorization credentials" Error, whhich I Can't seem to solve.
If i set the security to "None", there are no issues.
I am currently using Postman to test the service.
Below areall the relevant details of the application(.net 4.6.2 console app), thanks in advance :)
App.config
<services>
<service name="XXXXX" behaviorConfiguration="servicebehavior">
<endpoint address="https://XXXXX.servicebus.windows.net/relayserver" binding="webHttpRelayBinding" contract="XXXXX" behaviorConfiguration="behavior" bindingConfiguration="default" />
</service>
</services>
<bindings>
<!-- Application Binding -->
<webHttpRelayBinding>
<binding name="default">
<security relayClientAuthenticationType="RelayAccessToken"/>
</binding>
</webHttpRelayBinding>
</bindings>
<behaviors>
<serviceBehaviors>
<behavior name="servicebehavior">
<serviceDebug httpHelpPageEnabled="false" httpsHelpPageEnabled="false" includeExceptionDetailInFaults="true" />
</behavior>
</serviceBehaviors>
<endpointBehaviors>
<behavior name="behavior">
<transportClientEndpointBehavior>
<tokenProvider>
<sharedAccessSignature keyName="RootManageSharedAccessKey" key="XXXX" />
</tokenProvider>
</transportClientEndpointBehavior>
</behavior>
</endpointBehaviors>
</behaviors>
</system.serviceModel>
<appSettings>
<!-- Service Bus specific app setings for messaging connections -->
<add key="Microsoft.ServiceBus.ConnectionString" value="Endpoint=https://XXXX.servicebus.windows.net/;SharedAccessKeyName=RootManageSharedAccessKey;SharedAccessKey=XXXX" />
</appSettings>
Opening the host
var host = new System.ServiceModel.Web.WebServiceHost(typeof(XXXXX));
host.Open();
Console.WriteLine("Press ENTER to close");
Console.ReadLine();
host.Close();
Azure Relay Firewall settings
Allow access from all networks
Testing the relay: test method (interface)
[OperationContract, WebGet(UriTemplate = "?id={id}&key={key}", ResponseFormat = WebMessageFormat.Json)]
FakeData GetFakeData(string id, string key);
Test Results
If I set relayClientAuthenticationType to None, i get a json response as expected.
<security relayClientAuthenticationType="None"/>
If I set relayClientAuthenticationType to RelayAccessToken, I get an unauthorized error.
<security relayClientAuthenticationType="RelayAccessToken"/>
<Error>
<Code>401</Code>
<Detail>MalformedToken: Invalid authorization header: The request is missing WRAP authorization credentials. TrackingId:..</Detail>
</Error>

Answer 1

Issue has been fixed : I had a typo in the access token i made: Created a new access token in c# using the following method: learn.microsoft.com/en-us/rest/api/eventhub/generate-sas-token