How to access webUi from VPN

I’m very new to Volumio, I just installed Volumio 2.253 on my Rpi 2B and it’s great!!!
I added openvpn client config to get it reachable from outside home also.
But… if i connect to the tun0 address webUI doesn’t work because all
calls to are adressed to the eth0 ip address :frowning:
is it possible to solve this issue?