Full Answer
Audit checklist: 1. WooCommerce Orders: Export last 30 days, count completed orders 2. GA4 Conversions: Reports > Monetization > count transactions 3. Facebook Ads Manager: Count purchase conversions, same period 4. Google Ads: Conversions > All conversions, same period What gaps reveal:
- WooCommerce 100, GA4 70: 30% client-side blocking
- GA4 70, Facebook 55: Additional platform-specific losses
- All platforms different: Attribution window differences + blocking Document everything. This becomes your "before" baseline for proving ROI.