SSL issue -- certificate error

Installed luci-ssl via from GUI. But I keep getting certificate errors. Am I doing something wrong? I did stealth my pings on firewall. could that have something to do with it? And yes, I'm new to this.

Please don't cross-post, especially given that you already got an answer.

Just to add to slh's answer in the other thread: your browser may have option to declare a certificate as trusted. E.g. Firefox calls that "exception".

Sorry, I could find the response to first post until this morning--then realized I wasn't signing in with cookies active. thanks a gain.