The following scam info popped up on my ipad 2: "Warning!! iOS Crash Report. Due to a third party application in your phone, iOS is crashed. Contact support for Immediate Fix: 1-855-509-5719." I searched and found others saying it's a scam. I can't close the window. I held the Home key + Power to force a shut down and brought up the Apple symbol. When I got back online, the "Warning!!" was still there. How can I get rid of it. Thanks.