Hi @Diana,
Our response times are one reply within 24 hours during the workweek. Thank you for your patience.
As for your issues, first I noticed that your URL is vhr.ch/web/event
Our plugins currently do not support sub-URLs, like vhr.ch/web/event. Only vhr.ch/event would work, for example. Or vhr.ch/calendar, but not vhr.ch/web/calendar, or vhr.ch/web/event.
The extra /web/ before the event URL slug is not allowed.
So, first remove this and ensure that your events page is attached right to the root of the domain name. vhr.ch/event, or something.
1. Once you do this, does anything improve?
2. Next, please post your system information to this thread. Here’s how to do that ? https://theeventscalendar.com/knowledgebase/sharing-sys-info/
Thank you!
George