Case #029: The cap that capped my growth

Case #029: The cap that capped my growth

A solid CPA offer, $35 per lead, was running well — until it wasn't, and the reason wasn't the campaign at all. $5,200 spent, $7,900 back, 52% ROI. Then over four days the ROI slid to 19% with no change on my end.

I tore the funnel apart looking for the leak. Creatives were fine. Traffic quality was steady. Conversion rate on the lander hadn't moved. Everything pointed to a healthy campaign that was somehow losing money.

The answer was on the network's side. The offer had a daily cap of 150 leads. I'd been comfortably under it. But the campaign had scaled into the cap — I was now generating 220 leads a day, and the network was silently rejecting 70 of them as 'over cap.' I was paying for 220 conversions and getting paid for 150.

The math of the leak:

— 70 unpaid leads/day at roughly $14 acquisition cost each
— ~$980/day spent on traffic the offer would never pay for

The fix was a conversation, not a code change. I negotiated the cap up to 300/day and dayparted spend to stay under it when it couldn't move.

Post-fix, one week:

— $6,100 spent
— $9,400 revenue
— 54% ROI restored

The lesson: a campaign that's scaling toward an offer cap is bleeding silently — watch the network's limits as closely as you watch your own spend.