DuckDNS / Home Assistant / NextCloud Wires Crossed!

I’ve been using Home Assistant with the duckdns addon for over a year now without issue.

I recently added another duckdns domain for my nextcloud instance running on a different raspberrypi. The wires seem to have become crossed somehow so to speak. When I try to go to my home assistant site on a desktop, I get a warning that the cert is from my other domain. When I forge on, indeed it connects me through to nextcloud! The extra-weird thing is that the two systems were coexisting for about two weeks and only became muddled today.

Can anyone help or tell me where to start troubleshooting? I’m perplexed! I tried removing and then re-adding the duckdns add-on to no avail.

One other note: I have accessed the home assistant gui through https://hassio.local:8123/ . When I first got through, the duckdns add-on was off.

Another reboot after re-installing the duckdns add-on appears to have fixed it… I won’t be surprised if this rears its ugly head in the future (e.g. upon a cert update), but I’m holding my breath for now.