AnomalyMediumOpen
Return on ad spend down 13% (3.42 vs 3.95).
Detected: Oct 1, 2026
Hypotheses, not conclusions
- Whether stock-outs or product-feed errors reduced shopping-ad delivery
- Whether the promotion calendar differed from August
- Whether Meta creative fatigue (frequency) increased
- Whether checkout conversion rate changed (site or payment issue)
Suggested next step
Check feed diagnostics and Meta frequency first; if both are clean, review checkout conversion.