OpenThread Border Router Conbee II boot loop

Hi,
I need some support for Thread configuration. Maybe someone can help me.
I flashed a Conbee II Stick with Thread firmware and configured the OTBR-Add-on.
It stucks in a loop if I try to start it.

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 Add-on: OpenThread Border Router
 OpenThread Border Router add-on
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 Add-on version: 2.12.2
 You are running the latest version of this add-on.
 System: Home Assistant OS 13.2  (amd64 / generic-x86-64)
 Home Assistant Core: 2024.11.3
 Home Assistant Supervisor: 2024.11.4
-----------------------------------------------------------
 Please, share the above information when looking for help
 or support in, e.g., GitHub, forums or the Discord chat.
-----------------------------------------------------------
s6-rc: info: service banner successfully started
s6-rc: info: service universal-silabs-flasher: starting
[20:39:54] INFO: Flashing firmware is disabled
s6-rc: info: service universal-silabs-flasher successfully started
s6-rc: info: service otbr-agent: starting
[20:39:54] INFO: Setup OTBR firewall...
[20:39:55] INFO: Starting otbr-agent...
[NOTE]-AGENT---: Running 0.3.0-b041fa52-dirty
[NOTE]-AGENT---: Thread version: 1.3.0
[NOTE]-AGENT---: Thread interface: wpan0
[NOTE]-AGENT---: Radio URL: spinel+hdlc+uart:///dev/ttyACM1?uart-baudrate=115200&uart-flow-control
[NOTE]-AGENT---: Radio URL: trel://eno1
[NOTE]-ILS-----: Infra link selected: eno1
44d.01:16:49.971 [C] P-SpinelDrive-: Software reset co-processor successfully
00:00:00.011 [N] RoutingManager: BR ULA prefix: fd47:1de1:da65::/48 (loaded)
00:00:00.011 [N] RoutingManager: Local on-link prefix: fdde:ad00:beef:cafe::/64
[ERR ]-REST----: InitializeListenFd error bind : Address already in use
[EMERG]-REST----: FAILED /usr/src/ot-br-posix/src/rest/rest_web_server.cpp:173 - otbr rest server init error
[20:39:55] WARNING: otbr-agent exited with code 255 (by signal 0).
Chain OTBR_FORWARD_INGRESS (0 references)
target     prot opt source               destination         
DROP       all  --  anywhere             anywhere             PKTTYPE = unicast
DROP       all  --  anywhere             anywhere             match-set otbr-ingress-deny-src src
ACCEPT     all  --  anywhere             anywhere             match-set otbr-ingress-allow-dst dst
DROP       all  --  anywhere             anywhere             PKTTYPE = unicast
ACCEPT     all  --  anywhere             anywhere            
otbr-ingress-deny-src
otbr-ingress-deny-src-swap
otbr-ingress-allow-dst
otbr-ingress-allow-dst-swap
Chain OTBR_FORWARD_EGRESS (0 references)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             anywhere            
[20:39:55] INFO: OTBR firewall teardown completed.
s6-svlisten1: fatal: /run/s6-rc/servicedirs/otbr-agent failed permanently or its supervisor died
s6-rc: warning: unable to start service otbr-agent: command exited 1
s6-rc: info: service legacy-cont-init: stopping
s6-rc: info: service universal-silabs-flasher: stopping
s6-rc: info: service mdns: stopping
/run/s6/basedir/scripts/rc.init: warning: s6-rc failed to properly bring all the services up! Check your logs (in /run/uncaught-logs/current if you have in-container logging) for more information.
/run/s6/basedir/scripts/rc.init: fatal: stopping the container.
s6-rc: info: service universal-silabs-flasher successfully stopped
s6-rc: info: service banner: stopping
Default: mDNSResponder (Engineering Build) (Dec  3 2024 17:48:50) stopping
s6-rc: info: service banner successfully stopped
s6-rc: info: service legacy-cont-init successfully stopped
s6-rc: info: service fix-attrs: stopping
s6-rc: info: service fix-attrs successfully stopped
s6-rc: info: service s6rc-oneshot-runner: stopping
s6-rc: info: service s6rc-oneshot-runner successfully stopped
[20:39:55] INFO: mDNS ended with exit code 4 (signal 0)...
s6-rc: info: service mdns successfully stopped
[20:39:59] INFO: The otbr-web is disabled.
s6-rc: info: service mdns: starting
s6-rc: info: service s6rc-oneshot-runner: starting
s6-rc: info: service mdns successfully started
s6-rc: info: service s6rc-oneshot-runner successfully started
s6-rc: info: service fix-attrs: starting
s6-rc: info: service banner: starting
s6-rc: info: service fix-attrs successfully started
s6-rc: info: service legacy-cont-init: starting
s6-rc: info: service legacy-cont-init successfully started
[20:39:59] INFO: Starting mDNS Responder...
Default: mDNSResponder (Engineering Build) (Dec  3 2024 17:48:50) starting

Thanks in advance for your help