Odd problem on one feed

Hi. I’m having a problem with one feed: Gizmodo. Starting a few days ago, new posts do not show up on the unread view, but they show up (as unread) when I switch to “All.” When I look at in a browser rather than the app, there’s an icon of a speaker with an X next to it. Any idea what’s causing this?

right click it and unmute it

D’oh. I didn’t know there was a setting for that. (I had to unmute on both the computer browser and the Android app.)
Wonder how that happened, though.