So have you checked that you have an appropriate filter list subscription for the ad in question? Adblock Plus, by itself, blocks nothing, and someone, either yourself or the authors of a premade filter list (such as EasyList) must write a filter rule that blocks the ad. It is a huge and neverending game of catchup to keep up with the constantly changing
web technology that websites use to show ads.
The appropriate thing to do if you find an ad that should be blocked, but isn't, is to notify the filter list authors. EasyList, for instance, has a user forum for exactly that purpose. AdBlock Plus also has a forum section for that purpose. Your AdBlock Plus button on the toolbar has a menu item called "Report Issue on this Page ... " that is there for exactly that purpose. I suggest you use it. The popular filter list authors are very quick to fix such issues when they are reported by users.
And the question is? – Xavierjazz – 2014-10-16T01:24:34.217
@Xavierjazz how do I fix it? – Celeritas – 2014-10-16T01:25:18.973
Have you tried uninstalling adblock plus (abp) and re-installing it? Even if ABP is working, would that advertisement qualify to be blocked? – Sun – 2014-10-16T02:06:54.423
@sunk818 I see your point about the advertisement qualifying to be blocked, all I can say is I've seen a very noticeable increase of advertisements not being blocked. – Celeritas – 2014-10-16T02:14:32.463
Sure, that's a valid observation. You just need to make sure that the adblocker is supposed to block it and it is not being blocked. I thought ABP on Firefox had a lot more features to detect stuff like. I use Chrome so I haven't used ABP on Firefox in some years... – Sun – 2014-10-16T02:17:18.487
What have you already tried? Reinstalled the add-on already? Does it work on other browsers? What's your operating system to begin with? – slhck – 2014-10-16T06:16:40.027