Articles

Meta's Algorithm Changed. Your Account Structure Didn't

Annie Wells

Senior Paid Media Manager

3/7/2026

Homefire saw results of 39.6% decrease in CPA and an 86.6% increase in ROAS after we restructured their account for Andromeda. We can do the same for you.

Meta's Andromeda update changed how the algorithm finds audiences. It no longer relies on the targeting you set: it reads your creative and finds customers based on what it sees. Most advertisers haven't restructured their accounts to work with that change, and Andromeda is starving them of performance as a result.

Sound Familiar?

Rising CPA - Cost per acquisition climbing with no clear reason why.

Rising CPC - Paying more per click, and the usual fixes aren't working.

Declining ROAS - Return falling even though spend and offers haven't changed.

Can't Scale Winners - Found an ad that works, but scaling it kills performance.

More Creative, Less Improvement - Producing more content than ever, but the needle isn't moving, and the platform gives no explanation.

Why It's Happening

Andromeda reads creative signals and uses them to find and expand audiences on its own, instead of relying primarily on the targeting parameters you set. Brands that haven't adapted are paying more to reach fewer people.

The problem usually isn't your budget or your bidding strategy. It's whether your account is giving Andromeda what it needs to work.

What A Proper Audit Uncovers

Creative Library - Volume, formats, hooks and creative fatigue signals.

Campaign Structure - Set up to work with Andromeda, or against it?

Persona Alignment - What your creative tells the algorithm about your customer.

Performance Trends - CPA direction, ROAS trajectory and scaling ceiling.

Homefire Case Study

Homefire came to us with rising CPA, a slipping ROAS and a creative team producing more content with less to show for it. We audited their account and rebuilt their structure and creative signals around how Andromeda actually finds audiences now.

  • CPA: down 39.6%
  • ROAS: up 86.6%

Read the full Homefire case study.

The B2 Guarantee

We're confident enough in what we'll find to put our fees on the line.

Book a free 30-minute audit call. We'll audit your account, show you exactly what's holding back performance, and if we're the right fit, we'll guarantee a 10% reduction in your Meta CPA within 90 days, or your management fees are refunded.

  • Free audit call. No commitment, no sales pitch, just a straight read on your account.
  • If we take you on and don't hit a 10% CPA reduction in 90 days, we refund your management fees.
  • The brands winning on Meta right now aren't spending more; they're set up differently.

Guarantee applies to accounts where B2 Agency manages paid social for a minimum of 90 days following the Andromeda audit. CPA reduction is measured against the 30-day average prior to onboarding.

Not ready for a call just yet?

No problem. Leave your email and we'll send you our free guide to Andromeda-ready creative, so you can see what good looks like first.