Purchase event is not reliable.

To test stape, I created a demo shop using WooCommerce with the twentytwentyfour default theme and WooCommerce default sample data.

I enabled the ecommerce datalayer events featured.

Using the Google Tag Manager Preview mode, I can see that all events are triggered except the purchase event. Sometimes the purchase events gets triggered sometimes not. If it is not triggered and I then manually reload the “order complete” page, the purchase event gets triggered.

This is not reliable.

My hunch is, that the purchase event gets called too early when the GTM and the datalayer does not exist yet. But I don’t have a proof for that, yet.