I have been using the same Korean iPhone with Korean sim in Korea with the same KakaoTalk account for years. But suddenly two days ago I was logged out without making any changes to my device, phone number, Apple ID, or SIM card. The logout happened completely unexpectedly.

When I try to log back in on my iPhone, I receive a message stating that there is no backup data available for chat restoration. The app explains that restoration can only be performed after backup data has been created on a previous device and provides the options "Receive data backup messages" or "Don't restore chats."

When I select "Receive data backup messages," KakaoTalk says that it has sent a backup notification to my existing device. However, this iPhone is my only mobile device and is the same device that was unexpectedly logged out. I am still logged into KakaoTalk on my MacBook, and I can access many of my previous conversations there, although some older messages appear to be missing or incomplete. The backup notification is visible on my MacBook, but it cannot be opened because it states that the message must be opened in the mobile app.

I have not uninstalled KakaoTalk from my iPhone because I am concerned about losing any locally stored chat data. I also do not want to select "Don't restore chats" because I am worried that doing so could permanently prevent me from recovering my chat history, and I have seven years of data from when I moved to Korea in there

Could anyone  please advise whether my chat history can still be restored on my iPhone or whether there is another recovery method available? Since my MacBook still has access to much of my chat history, there has to be a way right? 

I need to access my work group chats asap, the fact that there is so customer service for kakao is crazy. Any help is much appreciated, even if it’s just news I have to give it all up and take the L. Tysm 

Local Korean kakao account wiped randomly?