POST `/api/v0/auth/delete-user-account` If users single-use code is correct then delete users account *

Wrong, superseded and spent are one value: they are indistinguishable to someone typing digits, and telling them apart only helps a guesser.

The outstanding code timed out. Read off that code's own expiry, so it reveals nothing about what was typed.

The code was retired after too many wrong guesses; only a new code can get past this.

tmc.mooc.fi could not be reached. Nothing was deleted and retrying is safe.

tmc.mooc.fi refused the deletion. reference identifies the recorded error, and is the only thing the user can hand to support.