Hi Scott!
I’m sorry you’re having that issue! Let me help you troubleshoot that.
As a first step, make sure you are using the latest versions of our plugins.
Could you please send us the Facebook URL’s where you are importing the events from and point us at least a few of those events that are getting duplicated?
Did this started all of a sudden or was it after performing an action in your site like a plugin, theme or WP Core update? Any other action you may have done before the issue appeared? Let us know.
When coming back, could you please share with us your system info by following this guide > https://theeventscalendar.com/knowledgebase/sharing-sys-info/ ?
Thanks,
Victor