Hi Al,
Thanks for reaching out to us! I’d be happy to help you 🙂
It seems there’s a conflict somewhere, either between two plugins or between a plugin and your theme.
Could you revert to the default theme (Twenty Seventeen) to see if that makes a difference? If not, could you deactivate all plugins (except for the Events Calendar and Events Calendar PRO) and check again your calendar?
Before doing those tests, you may want to read our documentation about how to test for conflicts.
Let me know how it goes.
Cheers,
Jeremy