meta-ads-investigate-campaign

Performs root-cause analysis on one underperforming Meta Ads campaign. Walks through the 8-branch diagnostic tree (measurement, delivery, audience, creative, landing page, budget, bidding, external) to identify the primary issue and produce a prioritized action plan with evidence chain. Use when asked to investigate, diagnose, or troubleshoot a campaign that is failing, underperforming, or not spending, or that has high CPA or delivery issues. Do NOT use for routine reporting, which is [[meta-ads-performance-analysis]].