We've changed to holding Sprint Reviews on MS Teams these days - it's a more stable accessible platform-agnostic tool for people dialling in from any device on any operating system, and does not have limitations of numbers of attendees.
In MS Teams, there is a team: "TIS Support Channel".
We hold our Sprint Reviews every fortnight on a Tuesday at 10.00-11.30 on the "General" channel within this team.
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