Manage your account
Enter the e-mail address used for your purchase(s). You are going to receive a security code to your e-mail address.

(Sorry, this system doesn’t work for subscriptions purchased with PayPal. You can cancel those through your PayPal account page at paypal.com, or by sending a request to me (tim at tallyhocorner dot com). I’ll execute any cancellation requests within 24 hours.)