You can view and manage your contracts, billing and change the service settings from the control panel.
1. Access here.
or Access the Tsukaeru net home page and click [Control Panel Login].
2. Enter your username and password on the login screen and click [Login].
3. If you have lost your password, click [Forget password?] then enter your email adress to reset your password.
If you have lost both your mail adress and password? Refer to here.