When I try to login to the OMV GUI, I get stuck in the login screen. I can enter my username and password, but pressing "login" just refreshes the page.
I have read a lot about firewall problems, but I cannot remember that I have changed something recently. Also putting my NAS into a DMZ didn't help.
I did not get anywhere with my own research, but maybe someone has ideas and can help me finding, understanding and fixing the problem.
Accessing files on my NAS and using Putty to connect to the NAS works fine.