first time Linux and OMV user here.
just installed OMV 5.0.5 and the web interface viewed from a remote computer gets a 502 Bad Gateway nginx until you logon as root at the NAS console. then you can log off root, or stay logged on, it doesn't matter, the web interface works until reboot. then you have to logon as root at the NAS console again to get access.
if you reboot from the remote web interface, the NAS reboots and the web page says loading... loading... loading... (it has lost connection) and when you refresh the page you get kicked because your auth has expired.
I needed to use the NAS as a headless unit. can't login every time to allow me to work remotely. isn't this a configurational issue?
one thing that was different during install, was that the NAS doesn't have access to the internet so it couldn't download a few gigabytes of data from a Debian server, so it said you can continue but your installation will be lacking. I hope that didn't have anything to do with it because I could not get that to happen.