Certain categories are not compatible together on an eventful listing.
Events cannot be listed simultaneously in:
Concerts & Tour Dates and Performing Arts
Concerts & Tour Dates and Sports
Performing Arts and Sports
Performing Arts and Comedy
These rules may change at any time. If you are having trouble listing something in all of your desired categories, there may be a reason.
The category Kids & Family is a little tricky.
Because of some malicious users (people adding inappropriate events to our system and adding the category "Kids" to them), we've had to be careful about the events that we allow to be added to that category. Now events have to be approved before they're included as a kid-friendly event. That means that your event is up for review to be added to the Kids category. As soon as it's approved, it will be added to the Kids category, too.