I just got a new keyboard accessory for my iPad Air the Belkin QODE ultimate. It works great, except every now and then the iPad will freeze up completely when I'm using it. All I can do is power down by holding the home and power button. It's happened three times in one day, and I can't discern any pattern as to what specifically is causing it to happen. I'm not sure if it's an issue with my keyboard or an iOS problem. Has anyone else had this problem? Any solutions?