In order to start using GrapheneDB, you first need to create an account. You can choose to register for GrapheneDB using your Google Account or your email address. Once you have created your account, you can create an Organization, Environment and deploy your databases. More details on account management can be found here.
If you happen to have forgotten your password, you can easily request it to be reset by clicking on the Forgot password? link in the login form. A link to reset the password will be sent to the email you’ve signed up with. More info on this topic can be found in this article.
Before deleting your account, please make sure that you are not a member of any Organization. The Owner of the Organization cannot remove their account until Organization and associated Environments and deployments are deleted. Here’s the article on account deletion.