Same thing happened to me the other day. I seldom use my phone to search the web but I was sitting idle and decided to take a look at the IRV2 website. Popup's were relentless. Some I could get rid of by hitting the "X" in the upper corner. Others I'd hit the "X" and it would open the ad in a new screen.
On my laptop I use Ghostery and AdBlocker, do not get any popup's
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi