Why is GA4 showing (direct) / none for my Shopify checkout sales?

When users navigate from WordPress to a separate Shopify domain checkout, GA4 loses client ID cookies and generates a brand-new session. GA4 Linker fixes this by automatically appending the _gl parameter to cross-domain links.

Does GA4 Linker support slide-out AJAX carts and popup checkout buttons?

Yes! The Pro and Agency plans use a high-performance MutationObserver that detects dynamically injected DOM elements and AJAX cart drawers in real-time.

Is coding required to set up GA4 Linker?

Zero coding required. Simply install the plugin, enter your Shopify checkout domain(s) in the WordPress admin panel, and GA4 Linker handles link and form decoration automatically.

How does GA4 Linker preserve UTM parameters?

On Personal, Pro, and Agency plans, GA4 Linker captures incoming utm_source, utm_campaign, utm_medium, and gclid parameters from your landing page and persists them through internal navigation directly into the Shopify checkout destination.

📉 Meta Attribution Leak

Why Your Meta Ad Purchases Show Up as "Direct / None" (And How to Fix It)

By Dimsquid Engineering•Published Aug 5, 2026•8 min read

Are your Meta (Facebook & Instagram) ad campaigns driving plenty of traffic, but showing nearly 0 purchase conversions in Meta Ads Manager while Shopify reports dozens of Direct / (none) orders? This critical discrepancy destroys your return on ad spend (ROAS) and tricks Meta's AI bidding engine into pausing winning ad sets. Here is why it happens and how to fix it permanently.

1. The Anatomy of Broken Meta Ad Attribution

When a prospective customer clicks on your Meta ad, Meta appends ?fbclid=XYZ... to your WordPress URL. When the page loads, the Facebook Pixel script creates a first-party cookie named _fbc (Click ID) and another named _fbp (Browser Identifier).

However, when the customer clicks a button to purchase and gets redirected from your main website (yourbrand.com) to your Shopify store (checkout.myshopify.com), the web browser enforces strict origin isolation rules. The _fbc and _fbp cookies remain locked on yourbrand.com.

🚨 The Consequence: When the customer fires the Purchase event on Shopify checkout, Meta has zero record of the originating ad click. Meta Ads Manager reports $0 revenue for that customer, and Shopify logs the order source as Direct / (none).

2. Why iOS 14.5 & ITP Privacy Regulations Exacerbate the Problem

Apple's Intelligent Tracking Prevention (ITP) and mobile Safari privacy changes shorten first-party cookie lifetimes and block cross-site tracking. Without active parameter decoration on outbound links, first-party cookies written on landing pages are purged within 7 days or isolated completely upon cross-domain navigation.

Parameters Stripped on Cross-Domain Redirect:

❌ fbclid (Facebook Click Identifier)

❌ _fbc (Facebook Click Cookie)

❌ _fbp (Facebook Browser Cookie)

❌ _gl (Google Analytics 4 Session Token)

❌ utm_source, utm_campaign, utm_medium

3. How to Pass Meta Parameters Across Domain Links

The solution is to intercept every link and form submission on your WordPress site that targets your Shopify checkout, extracting fbclid, _fbc, and _fbp from the document context and appending them as URL search parameters.

When Shopify checkout opens with ?fbclid=IwAR...&_fbc=fb.1..., the Meta Pixel on Shopify instantly reads the URL parameters, recreates the _fbc cookie on Shopify's origin, and matches the purchase to your exact Meta ad campaign.

⚡ Automated Solution

4. The 60-Second Fix: GA4 & Ad Pixel Linker

GA4 Linker (by Dimsquid) handles link, form, and slide-out cart parameter forwarding automatically. On Personal+ plans, it forwards Meta (fbclid, _fbc, _fbp), TikTok (ttclid, _ttp), and GA4 (_gl) tokens seamlessly.

Get Personal Plan ($49/yr) →Read Technical Guide: Pass fbclid →