After going through all of it, I no longer can log into the local IP address in my internet explorer and I also can’t get to Home Assistant via the duckdns.org address.
if you type https://YOUR_IP_ADDRESS:8123 into the url bar do you get a security warning? (Note the S on the end of https)
if you check out your external ip address (search engine “What is my ip”), and then type https://YOUR_EXTERNAL_IP_ADDRESS:8123 do you get a security warning?
Did you forward port 8123 → 8123? Or 443 → 8123? If the latter try https://YOUR_EXTERNAL_IP_ADDRESS (with no port number)
When you go to your duckdns page does the ip address there match your external ip address?
First bullet: yes I get a security warning.
Second bullet: says page can’t be reached
Third Bullet: I didn’t do anything with the port so I am assuming it is still 8123? Without the port, it says it can’t reach the page.
Fourth Bullet: Yes, they match.