EME Events made Easy – 404 Errors

I am getting 404 errors on all attempts to display events in EME.
This Happens in the editor itself when I try Preview and on the links.
I read the threads about SEO options and Permalink settings and have tried turning them on and off in a variety of ways and changing the Permalinks, but nothing makes the Event display… Please help. This is a very active community site.
You can see the page with links here: http://www.lakewenatcheeinfo.com/summer-activities/

https://wordpress.org/plugins/events-made-easy/