Subscriptions are the easiest way to get our products withouth the hassle of buying each time you want to use them. It is a yearly autorenewal subscription and on the PNP website they are managed through Paypal as a service provider and payment processor. On the PNP mobile app they are managed through the app store of your device provider, wether it is iTunes or Google Play
You can see the status of your subscription in your Billing history, and make changes to it in your My account section. Find both of these sections by selecting your name in the top right of the page.
If you made your purchase through your own Paypal account, you can find the instructions for managing your purchases and subscriptions through your Paypal account HERE.