Family Name  : Miungs

Server            : Asia

Currently cannot login with LINE Account with error code as seen in picture above.

Hi! This has also happened to my friend. Have you tried clearing cache, and data for the LINE app and logging out of your LINE account in your device where you play BDM? Doing this has resolved my friend's issue with LINE. You can also uninstall and re-install the app if this doesn't work.  Also, you can contact the support for more troubleshooting workaround. Here is the link btw: https://world.pearlabyss.com/Support/Qna/Index/Mobile

Same thing happened to me on October after the October 10th maintenance. Unfortunately they can't help me retrieve my account which is kind of disappointing to be honest.