s browser. Safari ITP, ad blockers and iOS tracking restrictions mean a meaningful share ofpurchaseevents never reach Google t hear about it. Measurement Protocol solves this because it :{{webhook. total_shipping_price_set. shop_money. amount}}, The part nobody covers is what happens after: your GA4 purchase count drifts below your Shopify order count and stays there. That gap is browser-side event loss — ITP, ad blockers, iOS — and no amount of tag configuration fixes it, because the event never leaves the client.