Hi Carol,
Thanks for reaching out! For all of our premium plugins, each purchase comes with a year of updates and premium support, and plugins can be renewed at a discount to continue receiving those benefits for the following year. Should you choose not to renew in a given year, you can still continue using the plugin at its current version, though you will lose your access to regular updates, feature additions, and bug fixes, and you will no longer be eligible to receive support for any issues that may occur on your site. Renewing at a later date will immediately restore your access to these benefits for the next year. (The only exception to the above is Event Aggregator, which relies on our cloud-based servers for performing import tasks and must be activated to function properly.)
If you should have any other questions about our licenses and how they work, you can find more details on our Knowledgebase here:
https://theeventscalendar.com/knowledgebase/what-does-buying-a-license-get-me/
I hope that helps to clear things up somewhat! 🙂 Thanks again, and let us know if you should have any other questions!