Hey Jack 🙂
Welcome back! I set up a recurring event, then marked it as a “Featured Event” but all the events remain intact. Can you confirm they’re actually being “erased”? Visit the list of events on the backend of your site and search for one of the events you marked featured. Are they all there? If so, can you try visiting Events > Settings > General and uncheck the ‘Recurring event instances‘ setting, then check to see if the events are displaying on the front end of your site?

If they are not there, try marking another event as featured, but before doing so review our Testing for conflicts guide to see if there is a potential theme and/or plugin conflict which is causing the deletion of events.
Please let me know what you find and have a great rest of your day. Cheers!