Good evening Hansruedi and welcome back!
Thank you for reaching out to us.
We are sorry to hear about the Map view disappearing on you. That’s not cool at all!
I would love to help you with this topic.
I just tested your page and noticed the map gives an error 404.
Here are the recommended next steps to pinpoint the issue:
- Please try the following steps: https://theeventscalendar.com/knowledgebase/fixing-http-404-errors/
- Could you also please go through our testing for conflicts procedure (preferably in a staging/dev environment or local install of your WordPress website) and let us know what you find out.
Basically the goal here is to revert back to a bare WordPress installation to see if the problem persists. It also allows us to pinpoint what the cause of the issue is.
Let me know how that goes.
Best regards,
Geoff B.