Icalendar family account

OH 3.4.2 on raspi 4

My wife and me have a separate ical account for ourselves. You can use them pretty well with OH and even the command properties do their job. For dates concerning both of us, there is a family account. But this account does not support an official key (just showing the opposites e-mail account), which prevents the use in OH. How can I link this account to OH.
Best regards.

This depends on the server. The family account also has to have the ability to share using an URL. Without URL it is impossible to download the data from the calendar using the icalendar binding.

I’m not sure what the “key” is in your case. Any way: without URL there is no downloadable calendar. You need to find it out. Maybe you can use your or your wife’s login to download if it’s not published.