Hey Casper!
Thanks for coming back! I am happy to help you with this! 🙂
It is possible to add a message at the top of that page by making a template override of edit-event.php template file located at /wp-content/plugins/the-events-calendar-community-events/src/views/community/Â
Once that template is copied into [your-theme]/tribe-events/community/edit-event.php you can add any message or text you want.
Does this help? Let me know how it goes and if you have other questions.
Best!
Victor