This happened 4 times trying to open this. Then I received a message my phone was infected with4 viruses and a button to fix it now. It looked fishy and closed everything and reopened
Great, thanks for the details (and your patience). We are working hard to isolate where these are coming from. The issue is that Google and other ad networks use a lot of different advertising partners, so sometimes finding the rogue ad(s) is like a needle in a haystack.
An update: we've been spending a lot of time trying to find where this is coming from. It is also hard to test because it can sometimes be isolated to a small set of users for example, iphone only, on cellular data not wifi, in certain geo-locations, etc.
Please keep reporting if you're still seeing these (with a screenshot, exact time you saw it, and your time-zone). Thanks!