Hello, when I set the field group settings to show them when category is not equal to X that doesn’t work. This group displayed on all posts pages regardless what category they have.
Not PRO version.
it seems to be working for me.
What version of ACF are you using?
Do you have any other location rules set for the group? They may be causing the group to show. If you do, what are the other rules.
Also, try deactivating other plugins to see if that clears things up so that we can narrow down what might be causing it.