[TUTORIAL] Fog Of War

Hey guys, ive implemented this Fog of War system following the advice and tips on this topic, i wanted to use this on a mobile project for my group.

https://forums.unrealengine.com/filedata/fetch?filedataid=156091&type=thumb

(Shader Model 5 preview)

I managed to launch the project on Android without any kind of Errors/Warnings, but it seems that the Post Process part is not working properly.

https://forums.unrealengine.com/filedata/fetch?filedataid=156092&type=thumb

(ES2 preview, same behaviour on my Android device)

Seeing this i tried to change the Editor Settings in: Setting->Preview Rendering Level-> Mobile/HTML5 -> Android Preview and the behaviour is the same.
Is it possible that i need to change some settings or configuration in “PP_Fow_Mat” in order to have it working properly on mobile devices?