Issue accessing services through domains - Adguard & NGINX

Hey, 

I'm a newbie and setup my unraid server and installed the first services (nextcloud, adguard). 

My use case is to access all services in my local network and access those services outside of my home network only through wireguard. 

Because the setup through wireguard on unraid didn't work (couldn't establish a connection), i used the wireguard plug-in in the Fritzbox (my router) dashboard. Now i can access all services through wireguard. Not optimal, but it works.

The issue I have is that I want to access e.g. Nextcloud through a domain in my home network and not via an ip address (and optionally, that it has a SSL certificate).

I tried to add just a simple dns rewrite for adguard.org like this:

I see the dns rewrite request in the logs of adguard, but i in my browser i get DNS_PROBE_POSSIBLE and not the Adguard Home Dashboard, which the ip address 192.168.178.2 points to.

When I run nslookup, i get this

I also tried to add another dns rewrite, which points to the ip address of the nginx proxy manager, where i route this request to my nextcloud ip address, which i can access through the ip address directly in the browser but not through this rewrite.

Attached is also my diagnostics file.

Thanks in advance! 🙏

tower-diagnostics-20240307-2232.zip