Hi Dijana,
I’m sorry you’re running into these issues with Community Events, but I’ll be happy to help you get it figured out. When did this start happening (maybe after an update or following another change that was made on your site)?
The first troubleshooting step would be to test for conflicts with your theme and other plugins. If you prefer to do this in a testing environment, WP Staging will let you create a quick copy of your site that you can use for testing.
If you can also share your system information with me, that would be helpful as well.
Thanks,
Jennifer