You can edit your account details by navigating to Luna Playground, clicking on your name on the top right of the page, and selecting 'Account' from the drop down menu.
Within Account settings you can do the following:
Edit your password under security
Review your current subscriptions and usage, as well as upgrade your plan and subscribe to other Luna products
Edit your billing information (add or remove payment methods), and view your billing history
Manage your team members by inviting them to use Luna Playground. Once they create their account, you will be able to manage their permissions and which products they have access to.