You don't need to sign up to Lumosity Mind with a new email address or password. You can absolutely use your Lumosity Brain Training account to sign up with Lumosity Mind!
When opening the Lumosity Mind app for the first time, you might be prompted to sign in with your Lumosity account if you're already logged in to your account on the Lumosity Brain Training app.
If you're not signed in to your Lumosity account on the Lumosity Brain Training app, then simply enter the same email address and password in order to link your Lumosity Brain Training and Lumosity Mind accounts. (Having trouble remembering the email you used to sign up with Lumosity? See this article for further instructions.)
If you try to sign up with the same email but a different password, then you'll be prompted to sign in the with same credentials as your Lumosity Brain Training account.
Feel free to send an email to our customer support team if you run into any trouble during the account creation process.