CardDav definetively doen't work

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Sorry to hear you’re facing problems :slightly_frowning_face:

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In order to help you as quickly as possible, before clicking Create Topic please provide as much of the below as you can. Feel free to use a pastebin service for logs, otherwise either indent short log examples with four spaces:

example

Or for longer, use three backticks above and below the code snippet:

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Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can :heart:

Nextcloud version (eg, 20.0.5): 22.2.3
Operating system and version (eg, Ubuntu 20.04): debian 4.19
Apache or nginx version (eg, Apache 2.4.25): Apache/2.4.38
PHP version (eg, 7.4): 7.3.31-1~deb10u1

The issue you are facing:

I do have the waring message about /.well-known/caldav and /.well-known/carddav when I connect thru Firefox, but not with Safari.

I try to connect my iPhone or my Mac but none works.

The output of your Nextcloud log in Admin > Logging:

(too many Exceptions :

RuntimeException: App class OCA\ocDownloader\AppInfo\Application is not setup via query() but directly)

The output of your Apache/nginx/system log in /var/log/____:

0.0.0.0 - ni [23/Dec/2021:17:35:40 +0100] "PROPFIND /remote.php/dav/files/user-xxx/ HTTP/1.1" 207 6264 "-" "Mozilla/5.0 (Macintosh) mirall/3.3.6git (build 7956) (Nextcloud, osx-21.2.0 ClientArchitecture: x86_64 OsArchitecture: x86_64)"

But you should add the two items to your Apache config file.
https://docs.nextcloud.com/server/latest/admin_manual/issues/general_troubleshooting.html#service-discovery-label

Thé .htaccess has been already created by install scripts…

Is your nextcloud in the webroot of your server? If not (e.g. it is in the subfolder “nextcloud” or similiar): Please take a look at the manual again!