This is an area that continues to be looked at to provide the best user experience to the host of the meeting, as well as the participant, while also knowing that is truly the correct person that should be joining the meeting.

Is this a one time occurrence or continually seeing the same error for that user?

Ian, Are you still encountering this issue even when using a new private tab?

Personal Mode for a DX Room Device is not officially supported today, this is something that is on the roadmap to be delivered in the coming months.Louis