While on a quite innocent looking site I have had a pop up lock my screen with an invitation to become a possible winner of an iPad. It does not appear to be connected with the site and it seems as if the only way to progress is to hit OK. Trouble is I don't know or trust the site so I'm wondering how to get rid of it. If I go into Safari it isn't there but it comes back as soon as I go into the Google app. It has also made me wonder about how I get the equivalent of Avast on my iPad in case that would prevent this sort of thing. For now I'm at a loss to know how to clear it as it still appears even after switching off the iPad and disconnecting the internet.
Can anyone help please?