Check the Google Ads account for material delivery and performance anomalies. Compare the latest complete calendar day with recent same-weekday history and a broader trailing baseline. Review impressions, clicks, cost, conversions, conversion value, CPA, and ROAS at account and campaign level. Account for reporting delay, conversion lag, campaign schedules, seasonality, recent launches, and recent account changes. Alert only when a deviation is large enough and sustained enough to be credible. Lead with anything that appears to have stopped serving, is spending unexpectedly fast, or has lost conversion volume while traffic remains stable. Include the evidence, affected campaigns, likely causes labeled as hypotheses, and the first check to make. If history is insufficient, describe the missing baseline instead of declaring performance normal. Otherwise, if nothing material is wrong, say the account is within its normal range.