Calendar not working 2

Hi, there, my calendar is also not working. None of the functionality is working (change month, etc.) There is a pop-up which says “Not Possible, try another week”, but also the buttons “next week”, “previous week” do not work.

https://leutrum.youcanbook.me is the link…

Any advice?

Sorry on the delay. I tested this out on a desktop (Chrome) and an Android device and did not run into any trouble. Are you seeing this happen on your mobile device? Are you still having the issue?