
To be sure that the certificate has been installed correctly and working properly, as well as that your customers are certain a secured connection is enabled and it covers data transmission through your website, you have the following indicators:
Note : From September 2023, the padlock icon will be replaced by a tune icon in the new Chrome browser version. Google's reasoning is that secured HTTPS connections have become the online norm, not the exception, and no longer serve as a trust indicator. As such, the tune icon itself will not be a trust indicator but will provide detailed information about a website's connection and settings. So moving forward, when using a Chrome browser, the primary indication of a successful SSL certificate installation on a site will be the absence of security warnings :

Frequently Asked Questions
Often the certificate can be reinstalled if you still have the matching private key and the certificate remains valid. Reissue it when the key, CSR or certificate details must change.
Related NiceNIC Guides
The server or load balancer may still present the old certificate, another virtual host may be selected, or an intermediate cache may not have reloaded the configuration.
If the issue continues after you complete the checks above, submit a NiceNIC support ticket with the affected domain or product, the exact error message, the time of the issue and the troubleshooting already completed.