Question 1

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

Accepted Answer

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.

Question 2

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

Accepted Answer

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

Question 3

Is coding required to set up GA4 Linker?

Accepted Answer

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.

Question 4

How does GA4 Linker preserve UTM parameters?

Accepted Answer

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.

Cross-Domain Attribution Guides & Deep Dives

🎯 Meta (FB) & TikTok Ad Attribution Guides

How to Pass fbclid and _fbc Cookies from WordPress to Shopify Checkout

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

How to Fix Missing TikTok Ad Conversions Between WordPress & Shopify

Boosting Meta Pixel Event Match Quality on Hybrid WordPress + Shopify Sites

How to Pass ttclid Parameters Across Cross-Domain Links to Shopify

📊 GA4 & Referral Exclusion Guides

How to Stop myshopify.com from Showing Up as a Referral in GA4

Why 40%+ of Your Shopify Sales Are Marked as "Direct / (none)" in GA4

How to Stop Shopify Checkout from Dropping UTM Campaign Parameters

How to Test if Your GA4 _gl Cross-Domain Token is Working Correctly

🛒 Dynamic AJAX Carts & WooCommerce Subdomains

Why Dynamic AJAX Slide-Out Carts Break Cross-Domain Attribution

How to Setup GA4 Cross-Subdomain Tracking (blog.domain.com to shop.domain.com)

How MutationObserver Fixes GA4 Link Decoration in Dynamic Cart Drawers

How to Pass UTM & Tracking Parameters from Blog Subdomains to WooCommerce

⚡ Technical Guides & Comparisons

The Complete Guide to WordPress to Shopify Cross-Domain Tracking

Manual GTM Code vs. Plugin: Best Way to Fix WordPress-to-Shopify Tracking