To enable your customers to make online payments (or process refunds where necessary) on your eCommerce Store you setup with the Service, we need to your STRIPE Secret Key and Publishable Key, otherwise the eCommerce Store can not process payments. If you use your own Store or do not setup a Store we do not need your Stripe information.
By providing these STRIPE keys to the Service, these will only ever be used to charge and/or process refunds for your eCommerce Store on your account. The Service does not conduct any other transactions in your STRIPE account. Your STRIPE Publishable and Secret Keys can be found here