Twitter account binding is scheduled to end by the end of 2023.
When Twitter account binding functionality is terminated, even Twitter accounts that have already been bound may no longer be able to log in or play the game. You should bind your account using other methods as soon as possible.
Azur Lane (JP) supports binding through Apple and Play Games Services accounts as well as through Yostar directly.
Twitter post
Art of Gorizia by MeIoN (Pixiv id:5271609)
Not unexpected, considering how unpredictable it’s been. Honestly better to use their own binding system since it’ll be there as long as the game is around
Yep, been using their own binding system since they released it on EN. No idea why it wasn’t available for the longest time.
Yostar have clearly lost faith in Twitter. Expect EN servers to follow suit soon.