Hi, I was hoping you could help me. My mother in law (80) keeps getting this persistant ad which will cover the top half of any screen rendering the tablet unusable. I have factory reset the tablet 3 times, installed only the most common aps that everyone uses and disabled pop up ads. The above will clear the ad but after some days it will reappear. Her android phone does not suffer the same ad. Any pointers would be very welcome.