"Les sites web justifient leur identité par des certificats. Firefox ne fait pas confiance à ce site, car il utilise un certificat qui n’est pas valide pour
www.synthzone.com. Le certificat n’est valide que pour nigelsp.synthzone.com.
Code d’erreur : SSL_ERROR_BAD_CERT_DOMAIN"
I translate:
Websites justify their identity with certificates. Firefox does not trust this site because it uses a certificate that is not valid for
www.synthzone.com. The certificate is only valid for nigelsp.synthzone.com.
Error code: SSL_ERROR_BAD_CERT_DOMAIN
You can ask your internet browser (edge, chrome, firefox ...) to display the SSL certificate. It will show you the certificate is not associated with
www.synthzone.com . Depending on you own configuration, your browser warns you or not. And you can choose to continue (trust) or not.