CalDAV-Calendar: How to add iCloud-Calendar successfully?

[HTL]

This might help you with troubleshooting.

Caldav Sync doesn't work on Jollaphone 2026 / 5.2.0.17

Indeed, and additionally, you may also try directly from the command line : install buteo-sync-plugin-caldav-tools package (devel-su pkcon install buteo-sync-plugin-caldav-tools). try to list your calendars with QT_LOGGING_RULES="*.debug=true" dav-client -u your.login@provider.org -P "xxxxxxx" -S caldav -D provider.org --list-calendars "". dav-client can also work with a direct server URL and root, without relying on discovering features : dav-client -u your.login@provider.org -P "xxxxxxxxx" …