Mason Community Center Online Registration: Please log in to register Login USER ID #: Password: Remember Me? (If this is a public machine it is recommended that you do NOT turn this on). No login ID? Please call us at 513.229.8555. Meanwhile, please browse as a guest! If you have an account with us, but you've forgotten your password, please click here for a reminder email. If you are unsure of your User Name or Password, you may also wish to contact our office If you're a brand new patron with us, please click here to register for a new account.