Visit your settings page by clicking on your profile at the bottom left, or by going to www.lsatdesk.com/settings while logged in.
Cancellation
Click on "Manage Subscription" from the tabs at the top, then click the dropdown for "Manage Plan" and then "Cancel".
Modify Billing
Click on "Manage Subscription" from the tabs at the top, then click the dropdown for "Manage Plan" and then "Edit Subscription".