Portmaster DNS blocking Error/ Thoughts on Portmaster

So first off…I’ve been trying to use Port master to block a couple of websites. However, when I use the block domain function I get this message.


So I’d like to know how to get past this error and block the domain. But on another note, I read a post asking about port master from 2 years ago and the consensus seemed to be that Pi-Hole was superior and better vetted. What is the general attitude towards Port Master nowadays? Is it gaining traction/reliability within our community?

I haven’t heard of Portmaster. I run AdGuard Home from a jail on my NAS.