Just installed on new site, can’t remove demo event!

I have tried to hit delete on this event, and it won’t delete. I hit trash on this event and supposedly it went to the trash, at least it didn’t show up in the event list on the back end, it showed in the trash. On the front end however, the link above still works! I went to the trash, and delete wouldn’t work there either, but archive supposedly did as the demo event doesn’t show up anywhere on the backend now, but the link above not only still works, it still shows up in the event calendar! How do I remove this event??!!

The page I need help with: [log in to see the link]