I paid for the Mac app just so I could have use the Catholic calendar with Mac's own Calendar app. Doesn't work. I tell it Universalis to share the calendar but it doesn't. If I try to open the settings again to check it then settings won't open. So I quit the app and reopen. Setting to share calendar with system is unchecked. Check it again. Nothing happens. Repeat above. Doesn't work. Very disappointed. M1 MacBook Air with MacOS Ventura.