Good evening Kathleen and welcome back!
Thank you for reaching out to us.
We are sorry to hear about the license key out of install message you have been getting.
I would love to help you with this topic.
As it turns out, it seems like the license is tied to a dev installation of your website (10.2.20.7).
But, no worries, you can always simply move your license key around to fix this: https://theeventscalendar.com/knowledgebase/moving-your-license-keys/
Let me know how that goes.
Best regards,
Geoff B.