Enter your OpenVPN config:
nano /etc/openvpn/server.conf
and add the following line with the local IP of your Pi-hole:
push "dhcp-option DNS 192.168.X.X"
Enter your OpenVPN config:
nano /etc/openvpn/server.conf
and add the following line with the local IP of your Pi-hole:
push "dhcp-option DNS 192.168.X.X"