Hi, Rmeus.
That is likely because each theme is different.
Here’s some CSS to help for the link you provided:
body.post-type-archive-tribe_events div.iheader {
display: none;
}
Please note that this is one-time assistance since you posted in our Pre-Sales forum from a user account that doesn’t have any purchases associated with it.
We don’t answer support questions for The Events Calendar core/free or Event Tickets core/free or their paid add-ons in the Pre-Sales forum.
If you made your purchase(s) through a different user account, please login to that account and then post in one of the paid forums.
Thank you for your understanding and thank you for using our plugins.
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Possibly helpful references: