Ads report — synthetic data
AD01: CTR 2%, CVR 10%, CPA CNY 20, ROAS2.5; prior CPA20, unchanged. No proof it can scale.
AD02: CTR2%, CVR0%, CPA not calculated, ROAS0; small sample; inspect tracking and attribution window.
AD03: no traffic/spend; all four ratios not calculated.
Missing: other baselines, real conversion actions and delayed attribution.
Suggestions are for human investigation. No campaign action.