Tried to search for liotes.voter as it shown on video. And got that one of nodes is offline.
Also got push notification that user not found . Got this information on smartphone. Try to look it more detail a little bit later on laptop.

Here as a suggeabout and if is possible maybe it's worth to add filter to choose node?

Upd. With help of liotes team found that all works correctly! Problem was on my browser side.