Good evening Gary and welcome to the Events Calendar forum!
Thank you for your interest in our products.
We’ll be glad to answer your questions.
However, please note that we do not offer support for our free plugin in this premium add-ons forum.
But, the good news is that you are still welcome to consult this forum to your liking and browse it for solutions, snippets and tutorials.
If you don’t mind, in the future could you please post your support questions here: https://wordpress.org/support/plugin/the-events-calendar ?
With that in mind, I believe the issue is caused by URL/slug conflict.
If you go to Events -> Settings -> General , the URL for a single event and events (the full calendar) absolutely need to be different from one another.
Furthermore, you cannot have a “real” page that uses that slug.
Let me know if that helps.
Have a great day!
Geoff B.
Best regards,
Geoff B.