I have installed and run VPN server (SoftEther) on my Raspberry Pi 3 (Raspbian) and it works fine except the fact that my PI works not only as VPN server but offers other services (SAMBA, FTP, APACHE, MYSQL) and I cannot access these services after I connect to VPN server.
In VPN Settings I have configured the bridge to eth0 so VPN machines get the IP addresses from router - and it works fine.
I have access to internet, to all other machines in my LAN/VPN (192.168.0.*) including router (192.168.0.1), I can even access to my PI using public address (router forwards it back to PI) but I cannot access PI using its internal eth0 address (192.168.0.100).
Other devices in my LAN have access to my VPN connected machine, my VPN machine have access to other devices in LAN but not directly to PI.