For subscribers of Grid Calculator Pro Edition who might need to update their credit card details (or cancel subscription) for any reason, please read this article. Find one of your receipts that has been emailed to you (from sender: firstname.lastname@example.org) click the link that is shown below within the red rectangle. This will take you to a secure webpage where you can update your details or cancel subscription. After clicking the link in the email, you will be able to select from two links within the webpage (Edit Subscription and Cancel Subscription).
Please note that we do not refund subscription fees, this is something that you agreed to when you placed your order as this was described in the shopping cart and in our terms and conditions. It is the customers responsability to cancel their own subscription.
Below is a printscreen of how the email looks that contains the cancel or edit/update subscription link.