As I told in his web: "All that programs must be connected to internet in push mode to work. ALL. Maybe you can close the window, but the program is running in background connected to internet." And Tgalal said in the same web: "If you close wazapp it will run in background (even if not appearing in window list). So you will be notified if you receive new messages as long as your phone is connected to Internet." Obviously if you disconnect from internet of close even the background process (maybe killing it), you won't receive anything until you open it again. Patlak, a FAQ in the first post could be a great idea .