thank you all for replying,
i made some pictures of my settings the ldap rights are read and write for everyone wide open.

here are some pictures of my settings and ldap.
the only error reports that i found are in /var/lib/egroupware/default/files/groupdav//.log
i use portainer and no log a made during the synchronization.
this are the errors i found the log is much lager but i wil only post the errors hope you can see the problem.
if i look at the error i don’t know were to begin.
<?xml version="1.0" encoding="utf-8"?>
<D:multistatus xmlns:D=“DAV:”>
<D:response xmlns:ns0=“urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/” xmlns:ns2=“http://calendarserver.org/ns/” xmlns:ns3=“urn:ietf:params:xml:ns:carddav”>
<D:href>/egroupware/groupdav.php/jasper/addressbook/</D:href>
<D:propstat>
<D:prop>
<D:supported-report-set><D:supported-report><D:report><ns3:addressbook-query /></D:report></D:supported-report><D:supported-report><D:report><ns3:addressbook-multiget /></D:report></D:supported-report><D:supported-report><D:report><D:sync-collection /></D:report></D:supported-report></D:supported-report-set>
ns2:getctag1762079089</ns2:getctag>
<D:sync-token>http://172.21.0.41/egroupware/groupdav.php/jasper/addressbook/1762079089</D:sync-token>
</D:prop>
<D:status>HTTP/1.1 200 OK</D:status>
</D:propstat>
<D:propstat>
<D:prop>
ns3:supported-address-data/
</D:prop>
<D:status>HTTP/1.1 404 Not Found</D:status>
</D:propstat>
</D:response>
</D:multistatus>
*** PROPFIND /jasper/addressbook/ --> “207 Multi-Status” took 0.176 s
*** 172.18.0.1 2025-11-02T10:28:12+00:00
PUT /egroupware/groupdav.php/jasper/addressbook/85602f41-281c-4ff4-81ea-79e3a51be68b.vcf HTTP/1.1
Connection: Keep-Alive
Content-Length: 234
X-Forwarded-Server: 127.0.0.1
X-Forwarded-Host: 172.21.0.41
X-Forwarded-For: 172.21.0.28
Authorization: Basic ***************
Accept-Language: nl-NL, nl;q=0.7, *;q=0.5
User-Agent: DAVx5/3.3.7-beta2-gplay (2020/11/23; dav4jvm; okhttp/4.9.0) Android/5.1
Content-Type: text/vcard;charset=utf-8
Accept-Encoding: br,gzip
If-None-Match: *
Host: 172.21.0.41
Content-Length: 234
Content-Type: text/vcard;charset=utf-8
BEGIN:VCARD
VERSION:3.0
PRODID:+//IDN bitfire.at//DAVx5/3.3.7-beta2-gplay ez-vcard/0.11.2
UID:85602f41-281c-4ff4-81ea-79e3a51be68b
FN:Ikkggf4 Hvfgb
N:Hvfgb;Ikkggf4
TEL;TYPE=cell:0965 368556
REV:2025-11-02T10:28:11Z
END:VCARD
HTTP/1.1 403 Forbidden
Date: Sun, 02 Nov 2025 10:28:12 GMT
Server: nginx/1.28.0
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate
Pragma: no-cache
X-Dav-Powered-By: EGroupware 23.1.011 CalDAV/CardDAV/GroupDAV server
X-WebDAV-Status: 403 Forbidden
PUT /jasper/addressbook/85602f41-281c-4ff4-81ea-79e3a51be68b.vcf --> “403 Forbidden” took 0.175 s
greetings Jasper