title: Adsense return the wrong selectors on my AMP pages
body: <p>I'm using AMP auto-ads and I'm not seeing any ads. 
  When checking the console, I found this: </p>
  
  <blockquote>
    <p>log.js:251 [amp-auto-ads] No anchor element found</p>
  </blockquote>
  
  <p>I dug a bit and found out that placements come from a remote config from Adsense:</p>
  
  <pre><code>https://pagead2.googlesyndication.com/getconfig/ama?client=ca-pub-7726580065556509&amp;plah=[site_url]&amp;ama_t=amp&amp;url=[Page_url]&amp;__amp_source_origin=[site_url]
  </code></pre>
  
  <p>I get the following config: </p>
  
  <pre><code>{
     "producerVersion":"20200506_020425",
     "placements":[
        {
           "anchor":{
              "selector":"ARTICLE",
              "index":0,
              "sub":{
                 "selector":"P",
                 "all":true,
                 "min_c":100
              }
           },
           "pos":4,
           "type":1,
           "style":{
              "top_m":10,
              "bot_m":24
           }
        },
        {
           "anchor":{
              "selector":"ARTICLE",
              "index":1,
              "sub":{
                 "selector":"P",
                 "all":true,
                 "min_c":100
              }
           },
           "pos":4,
           "type":1,
           "style":{
              "top_m":10,
              "bot_m":24
           }
        },
        {
           "anchor":{
              "selector":"ARTICLE",
              "index":2,
              "sub":{
                 "selector":"P",
                 "all":true,
                 "min_c":100
              }
           },
           "pos":4,
           "type":1,
           "style":{
              "top_m":10,
              "bot_m":24
           }
        },
        {
           "anchor":{
              "selector":"ARTICLE.post",
              "index":0,
              "sub":{
                 "selector":"P",
                 "all":true,
                 "min_c":100
              }
           },
           "pos":1,
           "type":1,
           "style":{
              "top_m":10,
              "bot_m":24
           }
        },
        {
           "anchor":{
              "selector":"ARTICLE",
              "index":0,
              "sub":{
                 "selector":"P",
                 "all":true,
                 "min_c":100
              }
           },
           "pos":1,
           "type":1,
           "style":{
              "top_m":10,
              "bot_m":24
           }
        },
        {
           "anchor":{
              "selector":"ARTICLE.post",
              "index":0,
              "sub":{
                 "selector":"P",
                 "all":true,
                 "min_c":100
              }
           },
           "pos":4,
           "type":1,
           "style":{
              "top_m":10,
              "bot_m":24
           }
        }
     ],
     "attributes":{
        "data-tag-origin":"ampa",
        "data-package":"7979106250"
     },
     "optInStatus":[
        1
     ],
     "adConstraints":{
        "initialMinSpacing":"1vp",
        "subsequentMinSpacing":[
           {
              "adCount":3,
              "spacing":"2vp"
           },
           {
              "adCount":6,
              "spacing":"3vp"
           }
        ],
        "maxAdCount":8
     }
  }
  </code></pre>
  
  <p>The problem is that I have no <code>ARTICLE</code> tag on my HTML page. 
  This is why I don't see any AMP ads. 
  Is this something on Adsense to fix or for me to deal with and change my HTML structure? 
  Please tag people from Adsense team if you know any. </p>