Hi @peterialshop,
There could be two issues going on here. The first is that the Added to Cart metric only works if the user has been cookied, which means that they’ve entered their email on your store at some point. Therefore, using a private browser to test the metric wouldn’t work.
Additionally, I noticed that your Button is using the Class notation - have you tried the third snippet option for buttons with redirects defined by class notation? This is similar to what my colleague said in the below post:
https://community.klaviyo.com/metrics-and-analytics-36/how-to-add-add-to-cart-snippet-with-shopify-turbo-theme-488
If you need more hands on assistance on getting this resolved, I would recommend reaching out and working with a developer you’re familiar with, or with an official Klaviyo Partner.
I hope this helps, and thanks for using the Community!
- Brian