OK, so the catalyst for this problem is that I had my plex running in docker, but it pooped the bed, so I am switching to the plugin.
Installation goes fine (I've done it and purged a few times as a result of this same issue), and immediately after it completes, plex is running - I can access it and set it up. However, it's not Enabled, in the gui. (imaged attached).
Now, this isn't a big issue if you just want to run it. But I want to stop it and then restart it. Specifically, I want to stop it, then switch out the database files/folders (because I'm not fixing all those thousands matches again, I tell you ), then restart it.
Flip it on, then off, then on again, you say?
OMV says no. Enabling, and then applying it causing an infinite applying load bar. Breaks it. Reload the page and it's enabled, but then try to disable and apply - same infinite load, and a page refresh or system reboot does nothing (i.e. doesn't stop plex) or breaks the install.
So, now I have a fresh install. Haven't touched it - no media folders added on anything. It's just running from install and prompting me to setup. Hoping someone can tell me what's wrong with it - or what I did wrong.