Problems with Samsung Galaxy Ace 2

[Flybel]

A long time ago I used Adblock plus. It worked all fine. Then I stopped using it. Now I want to use it again, I activate the app and set the proxy (correctly!), but he still says no traffic on port 2020. My Android version is still the same (2.3.6).
Need help.
Flybel

Sorry for bad language, I'm german.

[MonztA]

Have you tried re-installing it?