When I run the command you gave me, Edgemax returns:
The specified configuration node is not valid.
I ran the following tho command regarding the DNS:
set vpn l2tp remote-access dns-servers server-1 8.8.8.8
set vpn l2tp remote-access dns-servers server-2 8.8.4.4
And when I run them again, Edgemax retunrs:
The specified configuration node already exists
Edit regarding the access to emote devices across the VPN:
I've tried to access the ui of the edgemax, but it didn't show up.