The session has been closed from the presenter device but the session remains launched in the videowall
The room is present in the videowall after it has been closed from the presenter device
The room has not been closed correctly.
-Open the room launcher page from any device, preferably from the presenter Surface
-Enter the same code as the room that did not close.
-The room will attempt to launch but as there is one already open, it will not appear in the video wall.
-Wait for the Presenter interface to be fully loaded
-Close the session using the icon at the bottom of the page
If the problem remains, create a ticket with the support team.