BEYONDO is designed so that games uploaded to the cloud can only be deleted by the person who recorded the video, or an owner or administrator. When a video is deleted from the cloud, no one but the person who filmed it can view it.
To delete a video, tap the game you would like to delete from My Games and swipe left on the screen where the video is displayed (first half, second half, etc.). Delete from cloud or Delete from device will be displayed according to the location and permission of the video, so tap either one.
The video stored on the device that was used to film the game is the original source video. If you delete it, even if it's uploaded to the cloud, it can be deleted by someone other than the photographer, so delete it with the understanding that the video may never be watched.