Hey all,
An update was posted here:
We’re seen reports of an issue with the first quest (Time Crisis), which can desync your character, and prevent you from turning in the quest. Closing the game and logging back in should solve the issue.
As a reminder, the error message saying that a character already with that name already exists is completely normal, and happens when you left the game (either with ALT F4 or got disconnected). The game will need about 5-10 minutes to disconnect your character from the game, allowing you to log back in.