We've improved signing in with LINE when you open the app inside LINE.
- Your LINE sign-in now stays active if the page reloads, so you no longer have to sign in again.
- The LINE sign-in option and the Logout button are now always available while using the app inside LINE.
- Sign-in starts faster and more reliably, and an expired sign-in is refreshed automatically instead of causing an error.
- Removed the pop-up messages that could appear during LINE sign-in.
