Hey Becky,
Thank you for reaching out to us! I’m very sorry about this issue you are experiencing, let me help you to solve it!
Can you please make sure that all of your plugins are up to date?
After that, please go to Events > Settings > APIs tab and under Facebook click “Refresh your connection with Facebook” button to see if it changes anything.
If the issue persists after trying to refresh your connection, I would suggest you to click on “Disconnect” and after that reconnect to Facebook again.
I’ve just ran I test in my own local install and could successfully connect Event Aggregator to Facebook.
If none of these options help to solve the issue you are experiencing, please let me know and I’ll be happy to further investigate your case!
Regards,
Patricia