Michael, wanted to drop you a note that I've been working on this off and on for the last month or so and should have something worth releasing in June that fixes all PHP 8 issues as well as several other modernization and security changes.
I have not done any real development on this since ~2021, although I do get the itch to do so occasionally. It would not be terribly difficult to support PHP 8 I believe, but I haven't looked that deeply into it. The more difficult task is moving to the more modern way of deploying things with namespaces, composer, etc. that I haven't really looked into or used yet. I can't promise a timeline on this but possibly sometime this summer.
Allow from all /
This has been resolved in the most recent release.
DB access error during installation when hoam-config.ini is present
This has been resolved in the most recent release.
Configuration form loads very slowly
This has been resolved in the most recent release.