title: Can't delete an article by Facebook Instant Article API's DELETE method
body: <p>I have an id of created article and I also can get the status of the article by GET method:</p>
  
  <pre><code>{article_id}?access_token={access_token}
  </code></pre>
  
  <p>I get a response like:</p>
  
  <pre><code>{
    "id": {article_id},
    "status": "SUCCESS"
  }
  </code></pre>
  
  <p>But when I try to delete the article by the DELETE method with the same params I'm getting this response:</p>
  
  <pre><code>{
    "error": {
      "message": "(#240) Requires a valid user to be specified (either via the session or via the API parameter for specifying the user.",
      "type": "OAuthException",
      "code": 240,
      "fbtrace_id": "GsXXXXBjq"
    }
  }
  </code></pre>
  
  <p>Everything was done according to the <a href="https://developers.facebook.com/docs/instant-articles/api#delete" rel="nofollow noreferrer">documentation</a>.</p>
  
  <p>I'm using <code>v2.6</code> graph version whit this permissions:</p>
  
  <pre><code>publish_pages, pages_manage_instant_articles, manage_pages
  </code></pre>
  
  <p>I use a page token that do not expire, I got it by <a href="https://stackoverflow.com/questions/7696372/facebook-page-access-tokens-do-these-expire">@Simon.Ponder's answer</a>.</p>
  
  <p>I have the only one admin user for the application and the page.</p>
  
  <p>How can it be solved?</p>