When a campaign isn't delivering, Campaign Health Check tells you why in one place, instead of you working through settings one at a time.
Where to find it: open the campaign and run Campaign Health Check.
What it checks
- Whether the campaign is active, and whether its Insertion Order is still valid — an expired IO stops delivery silently, and this is one of the most common causes.
- Whether your bid is competitive for the traffic you've targeted (see How do I fix a "Low Bid" indicator?).
- Whether your daily budget has already been spent.
- Whether you have approved creatives attached in the sizes your targeting needs.
- Whether your targeting is so narrow that there's little or no matching inventory.
- Whether your account balance can fund the campaign.
How to use it
Run it first, before changing settings. It usually names the single blocking issue, which saves you from adjusting three things at once and not knowing which one fixed it.
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Sep 7, 2026