Please see the image below. Basically Pinterest Tag doesn’t work properly. I used Pinterest app on Shopify store. There is a guide https://help.pinterest.com/en/business/article/link-your-shopify-and-pinterest-accounts suggests to add this code but where how I couldn’t find.
onclick="pintrk('track', 'addtocart');"
Hi @Kutalp ,
I hope you are doing well.
That doc seems to be for vintage themes. If you are using Dawn, you can find the form in snippets/buy-buttons.liquid. Open that file and find id="ProductSubmitButton-{{ section_id }}, it is a button with type=“submit” like the following picture.
I hope this is useful to you! 
I did the same before but it didn’t work, I will try again update here.
Hi @Kutalp ,
I am not familiar with Pinterest but you can try to change the tracking code to this
onclick="pintrk('track', 'addtocart', {line_items: [{ product_id: '{{ product.id }}'}]});"
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