Adblock Plus

Hello Adblock,
I am using Adblock (the latest version) for internet explorer 11. The issue is that Adblock does work perfectly with Yahoo Mail box; Adblock fails to make disappear the ad side bar that is placed at right side of the mailbox page; it just hides the splitter toggle of the side bar but the side bar itself.

BTW, Adblock can remove the ad that appears in a row above the lines of in Yahoo Mail list.
Please advise me in this regard.

I have the opposite occurring. I woke up this morning to ABP failing to block any ads. I managed it to block the sidebar, but the bar above the emails is back. It's definitely intrusive advertising.