Import *.ics doesn`t work

Hello,

i would like update my jevents calendar from an *.ics link. I read many posts but no one helps me.
I have seen something with "anon refresh", but i found nothing about this in the settings. Nothing is shown in the categories too.

I use joomla 3.10.11 and JEvents 3.6.46 Stable.

If it works i would like to update it with url link and with EasyCron.
Anyone have an idea?

Thanks.