Hi Kathy!
Thanks for reaching out to us! Let me help you with this topic.
You won’t need to change the license key you are currently using as it does not change once renewed.
I could verify that your license is valida and active so you are good to go.
You won’t need to download the plugin either if its already installed in your site. If an update is available for the plugin, you should be able to update directly from your site.
I hope that helps. Let me know if you have other questions and I’d be happy to help.
Best,
Victor