You may ask an existing Gogrok user to send you an invitation, or simply click on "Register a new account" when you launch Gogrok.
2. I forgot my password, what should I do now?
You may click on "Forgot your password?" when you launch Gogrok. You will be asked 3 password-protection questions. If you answer them correctly, you will receive an email with your new password.
3. Do I need to remove the previous version when I install a new one?
No, you may directly install the new version. But the previous version will no longer exist.