When visitors see a warning like Your connection is not private or Your connection is not secure, it means the browser cannot confirm that the SSL certificate serving your site is valid for that address right now. The exact cause varies, so start by clicking Advanced or Certificate details in the browser warning itself, since it usually names the specific problem.
Certificate has expired
Every SSL certificate has an expiry date. If AutoSSL renewal failed silently, or a paid certificate lapsed without being renewed, the certificate stops being trusted the moment it expires.
In cPanel
Open SSL/TLS Status and check the expiry date next to your domain. If it has expired, click Run AutoSSL to reissue it, or contact ZIPROF support if you are on a paid certificate that needs manual renewal.
In DirectAdmin
Open SSL Certificates and check the certificate's validity dates. If it is a Let's Encrypt certificate that failed to auto-renew, re-run the free certificate request from the same page.
Domain name mismatch
A certificate issued for yourdomain.com will trigger a warning on www.yourdomain.com if the www version was not included when the certificate was issued, and vice versa. When reissuing through AutoSSL or DirectAdmin's free certificate tool, make sure both the bare domain and the www subdomain are selected.
Mixed content
If the padlock shows as broken or a warning icon rather than an outright error page, the certificate itself may be fine but your site is loading some resources, such as images, scripts, or stylesheets, over plain http:// instead of https://. Check your site's HTML and CSS for hardcoded http:// links, and update your CMS settings (for example WordPress's Site Address and WordPress Address under Settings > General) to use https://.
DNS pointing to the wrong server
If you recently moved hosting or changed nameservers, visitors may still be reaching an old server with an old or missing certificate for your domain, while your actual site sits on the new server with a valid one. Confirm your domain's DNS or nameservers point to ZIPROF's servers, and allow time for DNS propagation before troubleshooting further.
If you recently installed a certificate and the warning still shows, clear your browser cache or try a private/incognito window, since browsers sometimes cache an old certificate state for a site you have visited before.