Old state: ad spend was burning, add-to-cart was 8%, but buyers were not finishing.
The store looked healthy at the top of funnel. Traffic was consistent, product pages were converting to carts, and paid acquisition was still finding buyers. The leak appeared after shoppers entered checkout.
Radar location: the mobile PayPal button was misaligned and covered 30% of the payment area on some devices.
Radar flagged a mobile-first checkout blocker and paired it with benchmark-style loss estimates. The issue was not a pricing problem; it was a trust and usability problem at the final step.
Final fix: one layout adjustment lifted checkout conversion in the sample model.
The recommended action was simple: isolate payment buttons, add spacing safeguards, and make express wallet options visible without overlap. In a real case study, this section should include source screenshots and verified analytics.