Some sites say they can see a content blocker and ask that I disable it. Others don't. It's just Safari that lets me know and I can't get in. It looks like more and more sites won't let us on with content blockers even though they don't always say so. It's funny that I can get in via Firefox though. I need to check when I get a chance and see what blockers I have on Safari that I don't have on Firefox and find the culprit that way maybe. Phooey!
I don't recall ever running into an error message such as yours.
I use Safari exclusively, and any time I can't get into a site because of AdBlock I get a pop-up from the site itself (at which point I reevaluate how badly I actually
want to get into the site).
