GA4 Attribution Recovery Case Study | Lina Lula

Fixing “Unassigned” Traffic and Attribution Blind Spots

Client Type: B2B SaaS / Lead Gen

Platforms: Google Analytics 4, GTM, Google Ads

Services: GA4 Audit, Attribution Setup

The Challenge

A high-spending B2B SaaS company was flying blind in their marketing efforts. Over 40% of their incoming traffic was appearing as “Unassigned” or “Direct” in GA4, effectively severing the link between ad spend and conversions. Without accurate attribution data, it was impossible to calculate true ROAS for paid channels or justify budget increases.

The Solution

Lina Lula performed a deep-dive audit of the measurement stack and implemented a strategic recovery plan:

UTM Protocol Overhaul: Standardized naming conventions across paid social, search, and email to ensure GA4 could correctly categorize every click.
Server-Side Tagging: Implemented Server-Side Google Tag Manager to bypass browser cookie restrictions and improve data accuracy by up to 20%.
Custom Channel Grouping: Configured GA4 to match the specific business logic of the client, correctly identifying referral traffic that was previously mislabeled.

The Outcome

By reclaiming the data previously lost to the “Unassigned” bucket, the marketing team gained a clear view of which campaigns were actually driving revenue.

“Unassigned” traffic reduced to less than 5% 22% increase in attributed conversions for Google Ads

The client successfully scaled their monthly ad spend by 40% within the first quarter of the new setup, guided by data they could finally trust.