VPN functionality isn't supported by Pi-hole.
VPN functionality isn't supported by Pi-hole.
I'm working on understanding your setup. You're using a Raspberry Pi 2 with Pi-hole and NordVPN configured through an Asus RT68U router. Some PCs connect via Windows 10 NordVPN but don’t see Pi-hole in their network, even though they’re using the VPN. You’ve tried adding Pi’s IP as a DNS server, switching Pi-hole to DHCP, and manually setting it up—but none of these resolved the issue. Could you clarify what happens when you connect those PCs to the VPN? Are they seeing the VPN traffic but not the Pi-hole?