Conversations among multiple participants for collaboration and communication in Teams
The second, Please ask the meeting organizer to remove you from the meeting then re-adding you again:
1. Ask the meeting organizer to select show participants > select (...) next to participant's name > remove from the meeting
2) Ask the meeting organizer to re-adding the meeting participants again to the meeting.
Ask the meeting organizer to select show participants > select "request to join" next to the participant's name. In case, the meeting organizer is unable to find you then ask him/her to type in your name in the search box.