Hi Lee,
I’m sorry that updating didn’t resolve this issue for you – reinstalling the plugin after creating events is definitely not a solution! To help pinpoint the source of the issue, could you please try testing for conflicts with your theme and other plugins? Make sure you have WP_DEBUG enabled while you do so. If you would prefer not to do this on your live site, WP Staging will let you create a quick copy of your live site that you can use for testing.
Could you please share your system information with me as well so that I can take a look?
Let me know what you find out, and please copy/paste any relevant error messages in your reply.
Thanks,
Jennifer