You were kicked off the game.
Login error:
Connection failed. This account is already connected to another account.

Re-logging into last played server multiple times does not work. Restarting application multiple times does not work. Re-signing into xbox profile does not work. Re-installing game does not work. Hard restarting console does not work. Game is 100% not playable because of this(other than most recent played server, even that will get this error sometimes)