Been a pain in my posterior for ages, I posted about it a month or two back and saw a lot of you have the same issue. I came across a solution (that some of you may already be aware of no doubt) that allows you to completely block ads on these sites (Star, Yorkshire Post etc) and get around the "Sorry, you have your adblocker turned on!" message. Uninstall adblock from Chrome. Install uBlock Origin instead. It catches most of these and gets rid of them. If you do still get one it has a function built in where you can right click the annoying pop-up, tell uBlock to get rid of it and then refresh. It can take a minute or two to highlight the right part but once it's done it's done for good.
Just tried it on the Yorkshire Post and it seemed to work at first but now I don't get the pop-up but the page greys out and the scroll-bar is removed (chrome)....