PC
When students turn off their cameras, their screens disappear from the video area.
Therefore, please remind students not to frequently turn off/on their cameras before the class.
Mobile
If a student runs another program or has slow internet, their screen turns black.
Therefore, please guide students not to run other apps/programs during the class.
If the student's internet is slow or if they are running other programs, the camera may appear to be turned off.
When the student turns off the camera, they disappear from the video area.