Hi Tan. Sorry for the inconvenience! You can reset and unlock your password from the "forgot password" link: https://app.tokeet.com/forgot If your IP address is blocked: please send us an email at support@tokeet.com with your IPv4 address from http://whatip.me/If you use our mobile app:  please log out of the app first--because it will keep trying to log in with the "old" password and lock you out again.