How to Cancel Lumosity
Login to your Lumosity account and click the Delete account button at the bottom of the page.
Enter in a reason for deletion and click the orange button labeled Delete my account.
Click the Confirm button on the window that appears. Your account will be deleted.
Note that deleting your account will permanently remove all game history and personal settings.
Accounts that have Premium access cannot be deleted. However, you can cancel auto-renewal and wait for your subscription to end, or you may request immediate account deletion by emailing Lumosity.
To request a refund, sign in and fill out the Refund Request Form.