As casual, in case you want to view the transaction of your subscription, you need to go to your Paypal account details to view the subscription information (Paypal Manage Subscription) or view it on the Billing History page on Backend
On this page, you can manage all your subscriptions and filter them. In addition, you can also cancel the subscription (How to Cancel the POS Lite subscription ) or apply the license key that you want to use for the POS lite (How to Apply the License Key on the Billing History Page ).