Forum Dismiss doesnt work

Hey guys,

I get some threads daily into my unread list.
I try to click “Dismiss” and tick the checkbox to unsubscribe some of the topics but they still pop up the next time a new post is made…

Am i doing something wrong?
Did i miss something?

At the bottom of the thread is a bell icon. There you need to select “mute”. If you are not interested in specific tags or category, you can mute them in settings.

So i basically need to do that for every thread individually?
Then For what purpose does that checkbox exist?