Oh, thank you @Homaron , you did a lot of work on the wiki!
@Azami Please Come Home Regarding A3 EN ending, they posted on Twitter, a month ago, a general statement on the discontinuation: A3 Website. Today, there was an in-game Announcement stating the exact date (1st November), and how the app will "run" after the date. You will need to look in the Messages/Announcement/News section on the Home Page stated "Regarding Future Updates of A3!" to read their statement.