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It's been a few months since we tried it -- so not fresh in my memory any more -- but as I recall, the biggest issue was with audio not working as expected. e.g. you could see people talking in the video feed, but not everyone could hear the audio. I don't think it was just a muted microphone on the other side; my recollection is that some people could hear the audio and some couldn't, but it wasn't clear why not. I remember having to call our group leader by cellphone because he wasn't seeing/responding to the issue in chat and was just continuing on... We did eventually get it working for almost everyone (I don't remember how though, unfortunately) -- but there were two or three people who just couldn't seem to get it to work no matter what they tried, and we ended up going back to Zoom for the next meeting.