How can I determine if the "score threshold not met" error is due to a problem with my reCAPTCHA integration or a user-specific issue?

Check your server-side logs for consistent reCAPTCHA verification errors. Use browser developer tools to inspect network requests and JavaScript errors when the reCAPTCHA form is submitted. If errors are widespread, investigate your integration. If errors are isolated, it's more likely a user-specific browser or network problem. Implement client-side error logging to get more information about the browser configuration that led to the low score.