Hi,

YouTube is intermittently testing strategies to show you ads or the anti-adblocking notification (ie. wall). We believe they intend to roll the wall out to their entire user base soon.

While our filter list authors are working on trying to address this issue, it may not be possible due to the way YouTube is now displaying the wall within the video itself. 

If you don't want to try to find a workaround, instead of uninstalling, we recommend allowlisting YouTube which will allow you to continue using AdBlock on other sites you visit while avoiding the wall on YouTube. Note: allowlisting will allow YouTube to show you ads.

If you'd like me to send some of the workarounds that other users have reported have worked them please send us a message to support@adblockplus.org.