Yesterday I've installed OMV 4.1 and Plex plugin through OMV-Extras. Everything was fine.
Today however... Plex service is still up and runnning (screenshot no.1). I can connect to it from PS4, no problem at all.
The problem is - in admin panel, "Plex media server" disappeared from "Services" tab, so I can't configure it now (screenshot no.2). What could be the reason of this?