
A blended conversion rate tells you that performance changed, but it does not tell you where. A GA4 funnel separates product views, basket activity, checkout and purchase so you can see which step needs attention.
Before acting on the numbers, confirm that each ecommerce event is implemented consistently and is not firing twice. A large drop can be a customer-experience problem, a tracking problem or both. Use the funnel to choose where to investigate, then test the journey yourself on the affected device.
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