For now I fixed it by having a local DNS server that resolves locally hosted FQDNs to my LAN address and point the LAN DHCP to that DNS server. It would be nice if TP-Link fixed NAT loopback, howerver

Quick update: when connecting via my phone from the OUTSIDE everything works, but when on my LAN it DNS resolves to the external (public) IP and apparently the router can't handle internal LAN...

I just replaced an old NETGEAR router with an AC4000 MU-MIMO Tri-Band WiFi router. My external (public) IP has not changed. After setting up Virtual Servers for port 80 and 443 to my statically (DHCP...