Duplicating events.

I suspect you have multiple organisations on the same account / API key but the organisations have the same events in both.

You can check if you use the demo maker https://fullworks.net/products/widget-for-eventbrite/eventbrite-shortcode-demo/ with ‘Own API Private Token’ if it lists more than one organisation, then that is your problem.

In which case you will need to tidy up your Eventbrite account to either have only one organisation or no duplicated events between organisations.

I haven’t heard back from you so I assume you have resolved this or moved on.