I have nginx up and working with pihole and its great. I can get to: https://dashy.homelab.duckdns.org/ On my PC but not my phone. On my phone, pfsense blocks it and says “Potential DNS Rebind attack detected, see https://en.wikipedia.org/wiki/DNS_rebinding Try accessing the router by IP address instead of by hostname.”

Why? I’ve disconnected and reconnected to WiFi, and waited a day.