The hostname thing is weird. I was able to navigate to the hostname in my browser which successfully showed the mediabox landing page (I believe this is ‘Homer’), but all the links on there were pointing to the machine IP. If I changed the address to be hostname:32400, maybe it would have worked, but I didn’t try that. I guess homer should route to a machine IP not a localhost so as when you land there from another device it properly routes to the machine which can serve the apps.
Aside: Do you (or anyone reading!) know how you do that thing where you alias your machine IP to an arbitrary name? I’m sure I did it once upon a time with ‘bonjour’(?), but I don’t recall any more than that.
Anyway, turning the deco’s onto access point mode solved everything :)
Regarding mediabox - there seems to be a few good projects like this, they are actually incredible and super helpful for a learning perspective. I started with YAMS which actually has miles better documentation and is super helpful for setting up the services. Mediabox seems to assume you know a bit more about how the *arrs work. It sets up the containers and the folder structures really nicely, but for a novice like myself it took some time to get all the applications configured.