yes it works perfectly now. thanks !

Is there anything that I should change ? every plugins look up-to-date.

Hi,
I have only one calendar on the page.
I call it the easiest way possible: {{davcal>}}

does someone have any idea about our problem ?

here is what is on the server log:
[Tue May 16 14:13:15 2017] [error] [client ip adresse] client denied by server configuration: /usr/share/dokuwiki/data/security.png, referer: https://ourwebsite.fr/doku.php?id=clic:calendrierseeg&do=admin

Hi,
in the developer tools, in console, nothing happens when I click on a day.
I have this :
"JQMIGRATE: Migrate is installed, version 3.0.0 jquery.php:20:440
Use of getPreventDefault() is deprecated. Use defaultPrevented instead."
it appears at the begining.
I have nothing added to the console when I click on a day or when I modify an events.
I'll look on the webserver log.

it works perfectly now, thanks !

you were right, the problem came from the plugin ACLauditor.

We checked, there is no error on the server's log file.

not checked for the server's log file yet
but on Firefox I clicked on f12, reload the page and I have this error message:
"ReferenceError: addInitEvent is not defined"
js.php:24
js.php:24:108057

we tried that and we still have the problem.
to clean the DokuWiki's cache we did:
"touch conf/local.php" which is recommended by dokuwiki's help