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Android - https://kakaogames.atlassian.net/wiki/spaces/KS4GFC/pages/788926932/EN_Android+Client+SDK+API#%EA%B8%B0%EB%B3%B8API#Unregistering-Without-%ED%83%88%ED%87%B4Using-UI%EB%A5%BCthe-%EC%82%AC%EC%9A%A9%ED%95%98%EC%A7%80Default-%EC%95%8A%EB%8A%94Unregistration-%ED%83%88%ED%87%B4%ED%95%98%EA%B8%B0UI
iOS - https://kakaogames.atlassian.net/wiki/spaces/KS4GFC/pages/788926969/EN_iOS+Client+SDK+API#%EA%B8%B0%EB%B3%B8API#Unregistering-Without-%ED%83%88%ED%87%B4Using-UI%EB%A5%BCthe-%EC%82%AC%EC%9A%A9%ED%95%98%EC%A7%80Default-%EC%95%8A%EB%8A%94Unregistration-%ED%83%88%ED%87%B4%ED%95%98%EA%B8%B0UI
Windows - https://kakaogames.atlassian.net/wiki/spaces/KS4GFC/pages/788927014/EN_Windows+Client+SDK+API#%EA%B8%B0%EB%B3%B8API#Unregistering-Without-%ED%83%88%ED%87%B4Using-UI%EB%A5%BCthe-%EC%82%AC%EC%9A%A9%ED%95%98%EC%A7%80Default-%EC%95%8A%EB%8A%94Unregistration-%ED%83%88%ED%87%B4%ED%95%98%EA%B8%B0UI