1. Identify the scope
Determine whether the issue affects:- Every page or only specific landing pages
- Every visitor or a particular browser, device, or region
- All traffic or one campaign or channel
- A specific date when a site, domain, checkout, or consent change occurred
2. Check the affected pages
Confirm that the Northbeam Pixel loads on every affected page, including:- Alternate landing pages
- A/B test variants
- Subdomains and newly launched domains
- Product and checkout pages
3. Test the complete landing URL
Open an affected ad’s final URL and confirm that:- It lands on the expected tracked domain.
- Northbeam and UTM parameters remain after every redirect.
- The parameters are not removed when the visitor moves to another required domain.
4. Review recent changes
Check whether the drop began after changes to your:- Website theme or tag manager
- Cookie-consent flow
- Domain, subdomain, or DNS
- Landing-page builder
- Checkout or payment flow