An advertiser is running a conversion campaign with narrow targeting and a custom cost per action (CPA) bid at $25. The campaign is not spending as much as it should. The advertiser wants a quick solution to fix the issue. What should the advertiser's next action be?

The advertiser's campaign is underspending due to narrow targeting and a custom CPA bid that is likely too restrictive. Shifting to automatic bidding allows Pinterest's algorithm to optimize bids to achieve the most conversions within the budget, helping to increase spend and delivery. Pausing creative with a CPA over $25 would further restrict delivery, exacerbating the underspending issue. Reducing the CPA bid to $20 would make it even harder for the campaign to spend, as it would be less competitive in auctions. Confirming CTAs is a best practice for creative performance but would not directly address the underspending caused by bidding and targeting constraints.