Broken tracking is a silent killer for ecommerce brands. Here's what fixing it actually looks like in practice — real data, real results.
The brand had their Meta Pixel installed three separate times — once via Shopify's native integration, once through GTM, and once hardcoded into the theme. Every purchase was firing 8 events instead of 1. Their reported ROAS of 4.2 was actually closer to 0.5. Campaigns were optimizing on completely fabricated data.
Removed the duplicate installs, consolidated everything through GTM with proper deduplication logic using event_id. Verified clean single-fire in Meta Events Manager across 50+ test sessions. Total implementation time: 6 hours.
"We had no idea our pixel was firing 8 times per checkout. Our reported ROAS was inflated by almost 3×. After the fix our campaigns immediately started performing better."
The brand had no Conversion API configured — pure pixel-only tracking. After iOS 14, browser-based tracking was missing over 60% of mobile purchases. Their Meta campaigns had no visibility into the majority of their actual conversions. Ad spend was being allocated toward audiences that weren't actually converting.
Implemented server-side Conversions API via GTM server container, connected to Shopify's order webhook. Set up event deduplication between pixel and CAPI. Event Match Quality score increased from 3.1 to 8.4 within 48 hours of going live.
"The audit alone was worth it. We found out our purchase events weren't firing on mobile at all — we'd been flying blind on 60% of our traffic for months."
The brand migrated from Universal Analytics to GA4 but never properly configured ecommerce tracking. GA4 was receiving pageview data but zero purchase, add-to-cart, or checkout events. Google Ads was running without any conversion data. Their entire optimization strategy was based on pageviews.
Built a complete data layer implementation for WooCommerce, configured all GA4 ecommerce events through GTM, linked GA4 to Google Ads for conversion tracking. Implemented enhanced conversions for Google Ads to recover browser-blocked signals.
"CAPI setup took 2 days and our event match quality went from 4.2 to 8.7. Our cost per purchase dropped 22% in the first week. Incredible ROI."