Is there any additional message on the error?
What do you mean copied/paste the code? Which code ? Paste it where?
Error Message is: "File list digest does not match"
Clean install of the downloader, right after authentication and pressing through the 3 or so texts with Welcome blabla.
"File list digest does not match" usually happen when you try to update your game while a new build is ongoing.
Can you confirm it's resolved.
Thanks