How to Fix Missing GTM Conversions

4 steps ~4 min

Step 0 of 4 completed

Confirm the symptom

Check whether conversions are missing site-wide or only on pages/forms where a user interacts quickly (e.g. submits a form before scripts have loaded) — this points to a delayed-loading cause.

Check WP Rocket's Delay JavaScript Execution setting

In WP Rocket → File Optimization → Delay JavaScript Execution, check whether GTM or the relevant tracking script is included in the delay list.
Exclude the GTM container script from the delay so it loads immediately.

Check consent mode configuration

If a cookie consent banner is in use, confirm tracking tags are configured with the correct default consent state in GTM so they can still fire (in line with applicable consent settings) before explicit consent is given, where your consent mode setup allows it.

Test with GTM Preview mode

Use Tag Manager’s Preview mode to confirm the conversion tag now fires correctly on a fresh page load and after a quick form submission.

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