Hi,
Thanks for using the Events Calendar.
Here on the pre-sales forum, I’m afraid we do not provide technical support. I would ask that you take any technical support questions across to our wordpress.org forum – our staff scan it periodically and other community members may also be able to help out.
The Events Calendar
If you have an account for our plugins, then please login and post in the customer forums and we can help out there as well.
In the mean time you can turn off Related Events in the Events Settings by checking this field and saving:
Events > Settings > Display Tab > “Hide related events”
Also, related events use the category or tag to related events to each other.
Thanks again!