Full Answer
Incremental fix approach: Phase 1: Add server-side for purchases only
- Install server-side plugin
- Configure purchase event to GA4, Facebook, Google Ads
- Leave existing client-side untouched
- Verify server-side captures conversions Phase 2: Compare and validate
- Run both for 2-4 weeks
- Compare server-side conversions to WooCommerce actual
- Should be 90%+ match (vs 60-70% client-side) Phase 3: Expand event coverage
- Add add_to_cart, begin_checkout
- Enable BigQuery streaming
- Add remaining platforms (TikTok, Klaviyo) Phase 4: Optional client-side cleanup
- Once server-side proven reliable
- Remove...