iPad Air was browsing Safari when all of a sudden an Apple tab opens up with a message in a smaller window that I can't get rid of. It states: http://www.instatechhelp.net ****WARNING!! IOS Crash Report**** Due to a third party application in your phone, IOS is crashed. Contact Support for Immediate Fix +1-877-514-9649 (Toll Free) OK (in blue as a link) I click OK, and the window comes right back, over and over again. I can't get rid f it and am unable to use Safari. Any suggestions on how to fix this? TIA!