Updated expiring SSL cert, now can't get on Pi-hole admin console

Good morning all,
I'm running Pi-hole 5 since May, and i was running 4 before that. While running version 4, I had changed my config to run over httpd instead of lighttd. I was also running in the console in https using a self-signed ssl cert that I use for other services on my server. The upgrade to pi-hole 5 went fine without a hitch. I didn't have to do anything to reconfigure.

Yesterday, I had to update my expired SSL cert. The cert works, as other services use it just fine. I've stored it on my local workstations browser, and it's trusted. When I try to go to the pi-hole console, I get a message that it's untrusted. NET::ERR_CERT_INVALID, and it's also trying to use the old certificate still. I'm unsure why. The new cert is named the same, and is in the same location as the old one.

Any ideas what is going on?

The upgrade likely reinstalled lighttpd. Double check what service is running the web interface then look at your configuration for that service (httpd or lighttpd) and make sure it’s pointing to the correct certificate.

Also maybe the browser cache could have something to do with it. Test with a private/incognito window to rule that out.