Thank you very much for the great update

[mueller]

The firewall conversion went smoothly thanks to the migration wizard, which is virtually foolproof and easy to use even for a layman.

I use OPNsense in my home network and therefore decided to switch from ISC DHCP to Dnsmasq DNS & DHCP.

As a layman, it took me some time to understand that in my case, Dnsmasq DNS & DHCP should "only" replace ISC DHCPv4/6 and not Unbound DNS as well (Dnsmasq DNS & DHCP is "only" used for resolution in the local network).
That's why it took a while to get adguard up and running again.
(Luckily, there are snapshots :-)

Once that was clarified, I uninstalled the ISC plugin and everything is working wonderfully – thank you very much

Oh, and this guide helped me a lot: