What isn't working for you? I've been using it for years and have no issues on the most recent versions of macOS. I don't use much of the functionality though, really only just use it to hide icons I don't care about.
Hidden Bar is working on my M1 Max MBP 16" with macOS 14.5. Not an option for me because it can't handle the notch, but the basic functionality works.
Ice ( https://github.com/jordanbaird/Ice ) also works, although it's still missing a lot of stuff and also still doesn't have anything to work around the notch. It's being updated though.
If no app works, then it might be something to do with your setup? Maybe some app you use or some change you've made? Very annoying in any case.
MacBook M1 Pro 2021 model 16 inch. Not working. For me nothing works and yes it anyway doesn't handle the notch. In case of Ice it didn't work in first 2 goes and then I gave up because I kind of felt weird that it uses accessibility permission workaround, kinda.
No idea what I changed. When I install back Dozer it starts working fine (with Shortcut not working). Then if I have to uninstall the Dozer I clear all files related to it using AppCleaner. So I guess that doesn't interfere either.
I will maybe debug it one of these days when I have some time.
I am now using Ice based on this post and it works, for me, as a drop-in replacement, aside from being able to pick what is permanently showing (wifi, primarily). I uninstalled Bartender after 10-12 years and am happily using this.