Hi,
PC (windows, mac) and phone are connected to OpenVPN.
N36L is the VPN server.
So, when I'm connected to VPN on either PC, MAC or phone (remotely, over 4G etc.) I can't connect to local network (where the N36L is) can't connect to NAS's IP either.
Access local LAN is ticked in OpenVPN server.
The workaround was to use OpenVPN GUI on PC, homebrew installed open VPN on mac. I think I managed to mess something up...
But as there was no workaround for the phone,
I did another fresh install on another machine and now everything works as it should.
Thank for your input @bearcat