ERROR for site owner: Invalid domain for site key

This error appears visually on the reCaptcha badge. It means the domain you are accessing the site from does not match the domains listed in the Google Admin Console. Double-check your spelling in the console settings. If you are on a staging site, ensure the staging URL is also added.

Comments Stuck or Not Submitting

If clicking 'Submit' does nothing, open your browser's console (F12). Check for JavaScript errors. A common issue is that the ID of your comment form is not 'commentform'. Inspect your theme's HTML and update `getElementById('commentform')` in the Step 2 code to match your theme's form ID.

False Positives (Legitimate Users Marked as Spam)

If real users are being flagged, your threshold might be too high. In the PHP code, look for `$result->score < 0.5`. Lower this to `0.4` or `0.3`. Google v3 learns over time; initially, scores might fluctuate until it understands your site's traffic patterns.

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