Upgrade GP Premium

Absolutely!

This article should help: https://generatepress.com/knowledgebase/updating-add-ons/

If you don't have an area to input your license key, you'll want to manually update: https://generatepress.com/knowledgebase/updating-add-ons/#manual-update

Then you'll be able to add your license key for future updates.

Let me know if you need more info :)

Thank you very much. I had to manually update, but then saw the License key box once it was updated. And now I'm able to change the background images.

Awesome, glad I could help! :)

I have a license and I don't know how to update to GP premium.

Nelson, if you're talking about the GP Premium plugin, just follow the steps Tom has laid out. I had to do the manual update because I didn't have a place to insert my license key. But after the update, you will have that place to insert it for future updates.