Good evening Chelanie and welcome to the Events Calendar Support forum!
Thank you for reaching out to us.
We are sorry to hear about the struggles you have faced while changing domains.
I would love to help you with this topic.
Based on the error message you are getting, it looks like you are entering your the Events Calendar Pro license number in the Event Aggregator box under Events -> Settings -> Licenses.
Here is a simple way to fix this:
- Remove your license key completely. If you need to, read the following: https://theeventscalendar.com/knowledgebase/moving-your-license-keys/
- Make sure you download and activate the latest the Events Calendar Pro to your new domain: https://theeventscalendar.com/my-account/downloads/
- Once it is activated, go back to Events -> Settings -> Licenses and enter your license in the Events Calendar Pro box
You should be good to go.
Let me know how that goes.
Best regards,
Geoff B.