Why did my CPA increase suddenly?

Your account is being forced to re-learn a more expensive conversion path. This usually comes from a change in auction competition, conversion rate, or optimization stability.

This issue is common among Meta advertisers and usually indicates a structural or optimization problem that can be resolved with the right approach. Understanding the mechanism behind the problem is the first step to fixing it.

This problem typically stems from one or more of the following:

• Check conversion rate on site (not just CTR)
• Check CPM and frequency for spikes
• Check if anything changed in budget, attribution, creatives, or pixel

Follow these steps to identify the root cause:

1. Check conversion rate on site (not just CTR)
2. Check CPM and frequency for spikes
3. Check if anything changed in budget, attribution, creatives, or pixel

Once you've identified the cause, apply these fixes:

1. Start by identifying the root cause using the diagnostic checklist above
2. Make one change at a time and wait 24-48 hours to see results
3. Document what you changed and the outcome for future reference
4. If the issue persists, consider reaching out to Meta support with specific details
5. Use the quick fix page for immediate action items