If you are unable to login to either the official Black Desert website, or the game launcher, first ensure that you are using the correct password. If you do not remember the password for your account, please use the "Forgot password?" button on the login page.
Second, be sure that your email was verified. If you are not receiving your verification e-mail, look at this article for more information.
If you believe your account has been compromised, submit a ticket immediately, so we can ensure your account’s safety.