Your account needs a password reset with the help of a moderator. Since you've private messaged them already, all you can do is wait. Since password resets are time-sensitive, and private messaging is the moderators' preferred communication channel, I recommend you turn on e-mail notifications for receipt of private messages in your community account. To do this, go to Settings -> Preferences -> Private Messenger. Tick the checkbox for "Receive email notifications for new private messages" and click save after making the change.
