Events disappear

I have just installed your plugin on my clients webiste. I’m using DIVI and only have SEO yoast plugin installed.
When I create an event, all goes well, but when I publish, it disappears. If you go to the Events page in the dashboard, WordPress says 2 exist (I have created 2), but none are shown.

It says All (2) Published (2), but underneath it says No Events Found

Any Ideas ?
Thanks
Emma