Hi! Same issue here. Should maybe an extra header be added for the authentication token within Prepare method of WebRequest class?

Public Sub Prepare()
    ' Add/replace general headers for request
    SetHeader "User-Agent", Me.UserAgent
    SetHeader "Accept", Me.Accept
    If Me.Method <> WebMethod.HttpGet Then
        SetHeader "Content-Type", Me.ContentType
        SetHeader "Content-Length", VBA.CStr(Me.ContentLength)
    End If
End Sub