I'm using W3 Total Cache - HandL UTM Grabber Guide

UTM attribution overview

This guide explains I'm using W3 Total Cache - HandL UTM Grabber Guide. It helps you capture UTM source, medium, campaign, term, content, click IDs, referrer, and landing page data and keep the marketing context needed for accurate reporting across forms, bookings, signups, and sales.

Please do the following changes in the plugin

Go to Performance > Rejected cookies and copy/paste the following text in there and save

utm_campaign
utm_source
utm_term
utm_medium
utm_content
gclid
first_utm_campaign
first_utm_source
first_utm_term
first_utm_medium
first_utm_content
handl_original_ref
handl_landing_page
handl_ip
handl_ref
handl_url
organic_source
gaclientid

It should look like this.