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What is a group? My children go to different schools. Can I use my profile for everyone? What do I do with the activation code? As a parent, how do I add another parent to my child? Can I also use Sdui on the computer? The sound in the video conference does not work The picture in the video conference does not work How can I reset my child's password? How do I add another child? Where can I download Sdui as an APK?