CalDAV setup problems

[email protected]
Newsgroups gmane.mail.imap.cyrus
Message-ID <[email protected]>
I am having a hard time setting up CalDAV. IMAP works, but no matter what I try I can't get CalDAV to work.

What does work is the admin interface; I can access it at the URL /dav/calendars/user/<username> and see 2 calendars: personal (which is created by default) and a test calendar I created with the admin GUI.

When I try to add the calendar to MacOS Calendar, I enter the following info:

Server address: <Server FQDN>
Server Path: /dav/calendars (also tried /dav/calendars/user/ and /dav/calendars/user/<username>
Port: 8443
Use SSL

The calendar app does not show any calendars, although the server can be seen in the sidebar (with empty calendar list); it displays an error stating "*The server specified an invalid calendar home."*

Cyrus version is 3.0.13-5 on Ubuntu 20.04; when Calendar.app connects, I see the following in syslog:

login: pd95f1ed9.dip0.t-ipconnect.de [217.95.30.217] markus Basic+TLS User logged in SESSIONID=<cyrus-23828-1647187744-3-17231603147856317728>
pd95f1ed9.dip0.t-ipconnect.de [217.95.30.217] as "markus" with "macOS/11.6.4 (20G417) CalendarAgent/954"; "PROPFIND /dav/calendars/ HTTP/1.1" (type=prop; depth=0) => "HTTP/1.1
login: pd95f1ed9.dip0.t-ipconnect.de [217.95.30.217] markus Basic+TLS User logged in SESSIONID=<cyrus-23828-1647187744-3-17231603147856317728>
pd95f1ed9.dip0.t-ipconnect.de [217.95.30.217] as "markus" with "macOS/11.6.4 (20G417) CalendarAgent/954"; "OPTIONS /dav/calendars/ HTTP/1.1" => "HTTP/1.1 200 OK"
login: pd95f1ed9.dip0.t-ipconnect.de [217.95.30.217] markus Basic+TLS User logged in SESSIONID=<cyrus-23828-1647187744-3-17231603147856317728>
pd95f1ed9.dip0.t-ipconnect.de [217.95.30.217] as "markus" with "macOS/11.6.4 (20G417) CalendarAgent/954"; "PROPFIND /dav/calendars/ HTTP/1.1" (type=prop; depth=0) => "HTTP/1.1
login: pd95f1ed9.dip0.t-ipconnect.de [217.95.30.217] markus Basic+TLS User logged in SESSIONID=<cyrus-23828-1647187744-3-17231603147856317728>
pd95f1ed9.dip0.t-ipconnect.de [217.95.30.217] as "markus" with "macOS/11.6.4 (20G417) CalendarAgent/954"; "OPTIONS /dav/calendars/ HTTP/1.1" => "HTTP/1.1 200 OK"

Help would be greatly appreciated; I am already being threatened with Exchange...
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Cyrus: Info
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