Hi,
Thanks for using the Events Calendar. Do you have a customer account here and can you post this question in the Pro forum?
If not we can help out on technical support questions in the WordPress.org Support Forum:
https://wordpress.org/support/plugin/the-events-calendar
It could be an issue with your theme and the Events Calendar, does changing theme’s help resolve the issue?
How about changing the event template:
Head to this page:
Events > Settings > Display Tab
Then change this setting:
Events Template to Default Page Template
That is about all I can suggest in the pre-sales forum. Please repost in the Pro forum the results or in the WordPress.org forum if you do not have an account.
Thanks