I have similar filters set up for accounts and instances. After filtering and refreshing, I never see content from those sources again

I’m sorry, I don’t really understand what you’re saying. How is the way that I do it any different than manually going into the settings and adding the filter yourself, that was the way the OP was trying to do it (according to their screenshot). The way I was doing it, just automatically adds it to the filter in the settings. What do you mean by being filtered automatically?