Good evening Michael,
I have found the cause of the issue.
You currently have a “real page” named Sted that also uses the http://events4kids.dk/sted/ slug.
This causes issues because the Events Calendar plugin is expecting to have complete monopoly over this slug (even if venues are not “real” pages).
This leaves you with a couple of options:
- Use a different slug for that page
- Use a different translation for Venue in our plugin’s language file
Once you are done, you should re-save your permalinks.
Let me know how that goes.
Best regards,
Geoff B.