Access via domain no longer works after changing ip address

background: home assistant has been running fine for years. i have a domain and lets encrypt working for secure remote access, no issues at all.

today, i changed the ip address of home assistant (via the web UI - settings → system → network). i also reconfigured my redirection rule in apache (on my web server, which routes the incoming requests) to point to the new ip address. after restarting apache and ha, i can access ha via the new ip address however when trying to access via the domain i get the “unable to connect to home assistant” page with the ha logo, the countdown clock, and a “retry now” button. this page is a ha hosted page.

so i changed the ip address back, restored the previous apache config, and everything works fine. changed it back to the new ip address and the issue persists.

what am i missing? is there other config areas in ha that need to be updated with the new ip? i’ve checked every apache configuration file and there is nothing i can find. lets encrypt is running fine on ha, doesn’t seem to be any issues. no errors thrown in ha logs that i can find, either.

It might be DNS.

Or trusted ips?

Or hostname?

just throwing darts.

edit: spelling

thanks for the ideas. you have helped to fix this.

it was a firewall rule i have in place that was still pointing to the old ip address. i had forgotten about that rule, and your reply helped to spark some additional thoughts…