Hi Frank!
Thanks for reaching out to us! 🙂
Could you please share with us the Facebook URL you are trying to import events from? This way we can make some tests on our end and see if there is anything wrong.
We have a great article that will walk you through the process of setting up imports here > https://theeventscalendar.com/knowledgebase/new-user-primer-event-aggregator/
I’m not aware of any public listings for events out there, but if you need a specific source of events to import just let me know and I’ll try to find a few for you to test.
Let me know if you have other questions.
Cheers,
Victor