To prevent KakaoTalk notifications from being received under blocking conditions, the MDM agent not only displays a block screen when active but also terminates the KakaoTalk process running in the background. This terminated process restarts when the KakaoTalk app is launched, at which point any missed messages are received. In summary, once the KakaoTalk app has been blocked, it must be launched by tapping the app at least once to resume normal operation.