Hosts can follow the steps below to enable members to view chats that occurred before members joined the chat.
• Mobile KakaoTalk > More (…) > Drive > Team Chat > select Team Chat chatroom > Settings (gear icon) > Manage Access > enable Previous Data
• Mobile KakaoTalk > chat list > your Team Chat > upper right menu (≡) > Settings on the lower right (gear icon) > Team Settings > Manage Access > enable Previous Data
If you are a member and unable to see previous chats, this may mean that the host has turned off the Previous Data setting or the chat backup data has been deleted.
Kakao cannot check whether the Previous Data setting has been enabled or chat backup data has been deleted, so please contact the host to know more.