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Can you share the GTM tag code?

<script async data-api-host="https://cdn.growthbook.io" data-client-key="sdk-gne8v9YSAltG8it3" src="https://cdn.jsdelivr.net/npm/@growthbook/growthbook/dist/bundles/auto.min.js"

</script>

Here you go! Thank you for your help.

So, this won't work in GTM, as it strips out data attributes for security reasons. Our docs cover how to do this, but here's what you need to do:

<script>
(function(s) {
  s=document.createElement('script'); s.async=true;
  s.dataset.clientKey="YOUR_CLIENT_KEY_HERE";
  s.src="<https://cdn.jsdelivr.net/npm/@growthbook/growthbook/dist/bundles/auto.min.js>";
  document.head.appendChild(s);
})();
</script>

https://docs.growthbook.io/guide/google-tag-manager-and-growthbook#creating-a-gtm-tag-for-the-growthbook-sdk

thank you! very strange it has worked in gtm preview the first time as the expirement_viewed event was firing before. Either way, there's a strange behaviour in the dataLayer. the expirement_viewed event only fires after interaction with the site (click or scroll). the SDK is firing at event #9 consent_status. Before the experiment_viewed event is firing, the variable for the feature value stays undefined. JS to get the variable: function() { if (window._growthbook && window._growthbook.getFeatureValue) { return window._growthbook.getFeatureValue("trust_widget"); } return undefined; }