Has anyone gotten MIAB to sync with the OSX calendar? I set up a german version (Calendar called Persönlich) and I thought it would be because of this. But even after renaming the calendar to “Username” Apple Calendar app still shows an exclamation mark and does not show the calendar.
I reply myself. The solution was to use /cloud/remote.php/caldav/principals/USERNAME/ as path, not the default one /cloud/remote.php/caldav/calendars/ that is coming from the .mobileconfig.