I have had AdGuard Home for a few years now, running on my small Ubuntu server. All works fine, but my ISP turned CGNAT few weeks back. I have all my stuff running via Wireguard reverse tunnel to free Oracle VPS. Everything works, except AdGuard. I’ve tried to forward all necessary ports, but still my phone says Can’t connect. Is there any chance to get this running? The ads in apps are killing me.
Whats your setup? Stuff dockerized? Looks like routing/iptables are set incorrectly (depending on your setup).
But my solution would be using a local DNS VPN like personalDNSfilter, exposing your services over the VPS to the net and connecting over https to them. For local access at home you can use split-brain-dns (hope thats the correct word [example.net = 8.8.8.8, at home it resolutes to 192.168.x.y]). With that you can just walk around and use every service with the best latency and bandwidth, without manually deactivating the VPN.
I’ve installed it with Snap. Maybe AdGuard needs to listen for traffic also from 10.0.0.2 or whatever the tunnel is set up on.