If you've forgotten your password, you may recover your account through this tool. Please note that it only works to recover access to an account via its username, not its displayed name, which is not necessarily the same thing. If you've forgotten your username, as well, or did not set a secret question/no longer remember the answer, please contact the staff at Arceus#0521.
Using the below tool is very easy. Simply input the username you remember having, and then press Recover. If you've set a recovery question, the system will present that question. Answer it, and if you've answered correctly, it will prompt for a new password.