Analytics are not being saved

I am having the same issue. I will update if I get any info.

This question has already been replied here.

The code you have to add is the following, a specific analytics code for amp pages:

<amp-analytics type="googleanalytics">
<script type="application/json">
{
  "vars": {
    "account": "UA-XXXXX-Y"
  },
  "triggers": {
    "trackPageview": {
      "on": "visible",
      "request": "pageview"
    }
  }
}
</script>
</amp-analytics>

Google help: https://developers.google.com/analytics/devguides/collection/amp-analytics/