# Subscription Subscriptions can purchased on the homepage or using the link in the web console of a running Pritunl server. Subscriptions are managed by Stripe. A Pritunl server can be upgraded at any time and does not need to be reconfigured when upgrading to a subscription. ### License Key After creating a subscription a license key will be emailed to the email address used during checkout. The license key does not need to be used on the same host that was used to create the subscription. If the license key is used on multiple hosts the subscription quantity will automatically increase the bill for each additional host. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.pritunl.com/kb/vpn/getting-started/subscription.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.