If you see a "Not Secure" warning despite having an active SSL, it is usually due to Mixed Content .
- The Reason: Your website is loading over HTTPS, but some internal resources (like images, scripts, or CSS files) are still using
http://links. - The Fix: You must update all internal links to use
https://. You can also use plugins or server-side redirects in cPanel to force all traffic through a secure connection .