However I want to setup a custom block page so users will be notified their request has been blocked. I am aware this could be done in V5 but cannot see how to achieve the same in the latest version.
Redirecting to a block page generally does not work as soon as HTTPS is involved.
Due to the increasing (and now almost complete) proliferation of HTTPS, Pi-hole has switched its default behavior to NULL blocking as early as 2018 with Pi-hole v4.0 , so that the block page was no longer used by default.
The blockpage itself was removed from Pi-hole in 2022, so about 3 years before v6 has been released.
that will teach me to listen to my friends!! thats a shame though as I find that if you tell someone their page is blocked they stop but if null blocking they keep trying.