: Use the Test URL tool in the same tab to verify if a site (e.g., facebook.com ) is correctly categorized. Summary of Quick Fixes Primary Fix Invalid Authorization Error Switch DNS to Cloudflare (1.1.1.1) and reboot. Trial Expired/Disabled Purchase/import a valid license key. Frequent Timeouts/Disabling Disable "DetectReliability" via SSH command. Categorization Not Active

If the Web Filter remains disabled due to "Reliability detection" (where the firewall stops checking categorization if it thinks the connection is unstable), you can force it to stay active.

Even after licensing, the categorization service may hang. Restarting it often clears transient errors.

When your shows as "not activated" and categorization is disabled, it is typically caused by license issues , DNS resolution failures , or an expired Zvelo authorization token . 🛠️ Step-by-Step Fixes 1. Fix DNS Forwarding for Zvelo