OSRAM/Ledvance Ceiling TW does not pair

Hi,

I have an osram Ceiling TW which was working before but after resetting the whole system, it cannot be paired anymore.

Pairing another device in the same room is successful.

I reset the light with 5x 2 secs on and 5 secs off - which is acked by blinking 1x - as expected.

ZHA pairing mode debug log:

2023-01-12 19:09:27.751 INFO (MainThread) [zigpy_znp.zigbee.application] Permitting joins for 254 seconds
2023-01-12 19:09:27.752 DEBUG (MainThread) [zigpy_znp.zigbee.application] Sending packet ZigbeePacket(src=AddrModeAddress(addr_mode=<AddrMode.NWK: 2>, address=0x0000), src_ep=0, dst=AddrModeAddress(addr_mode=<AddrMode.Broadcast: 15>, address=<BroadcastAddress.ALL_ROUTERS_AND_COORDINATOR: 65532>), dst_ep=0, source_route=None, extended_timeout=False, tsn=172, profile_id=0, cluster_id=<ZDOCmd.Mgmt_Permit_Joining_req: 0x0036>, data=Serialized[b'\xac\xfe\x00'], tx_options=<TransmitOptions.NONE: 0>, radius=0, non_member_radius=0, lqi=None, rssi=None)
2023-01-12 19:09:27.753 DEBUG (MainThread) [zigpy_znp.api] Sending request: ZDO.MgmtPermitJoinReq.Req(AddrMode=<AddrMode.Broadcast: 15>, Dst=0xFFFC, Duration=254, TCSignificance=0)
2023-01-12 19:09:27.770 DEBUG (MainThread) [zigpy_znp.api] Received command: ZDO.MgmtPermitJoinReq.Rsp(Status=<Status.SUCCESS: 0>)
2023-01-12 19:09:27.772 DEBUG (MainThread) [zigpy_znp.api] Received command: ZDO.MgmtPermitJoinRsp.Callback(Src=0x0000, Status=<Status.SUCCESS: 0>)
2023-01-12 19:09:27.773 DEBUG (MainThread) [zigpy_znp.api] Sending request: AF.DataRequestExt.Req(DstAddrModeAddress=AddrModeAddress(mode=<AddrMode.Broadcast: 15>, address=0xFFFC), DstEndpoint=0, DstPanId=0x0000, SrcEndpoint=0, ClusterId=54, TSN=172, Options=<TransmitOptions.SUPPRESS_ROUTE_DISC_NETWORK: 32>, Radius=0, Data=b'\xAC\xFE\x00')
2023-01-12 19:09:27.775 DEBUG (MainThread) [zigpy_znp.api] Received command: ZDO.MsgCbIncoming.Callback(Src=0x0000, IsBroadcast=<Bool.false: 0>, ClusterId=32822, SecurityUse=0, TSN=13, MacDst=0x0000, Data=b'\x00')
2023-01-12 19:09:27.776 DEBUG (MainThread) [zigpy.application] Received a packet: ZigbeePacket(src=AddrModeAddress(addr_mode=<AddrMode.NWK: 2>, address=0x0000), src_ep=0, dst=AddrModeAddress(addr_mode=<AddrMode.NWK: 2>, address=0x0000), dst_ep=0, source_route=None, extended_timeout=False, tsn=13, profile_id=0, cluster_id=32822, data=Serialized[b'\r\x00'], tx_options=<TransmitOptions.NONE: 0>, radius=0, non_member_radius=0, lqi=None, rssi=None)
2023-01-12 19:09:27.777 DEBUG (MainThread) [zigpy.zdo] [0x0000:zdo] ZDO request ZDOCmd.Mgmt_Permit_Joining_rsp: [<Status.SUCCESS: 0>]
2023-01-12 19:09:27.777 DEBUG (MainThread) [zigpy.zdo] [0x0000:zdo] No handler for ZDO request:ZDOCmd.Mgmt_Permit_Joining_rsp([<Status.SUCCESS: 0>])
2023-01-12 19:09:27.784 DEBUG (MainThread) [zigpy_znp.api] Received command: AF.DataRequestExt.Rsp(Status=<Status.SUCCESS: 0>)
2023-01-12 19:09:34.232 DEBUG (MainThread) [zigpy_znp.api] Sending request: SYS.Ping.Req()
2023-01-12 19:09:34.236 DEBUG (MainThread) [zigpy_znp.api] Received command: SYS.Ping.Rsp(Capabilities=<MTCapabilities.APP_CNF|GP|UTIL|ZDO|AF|SYS: 1625>)

I cant see any obvious errors.

A sniffing shows me Beacon Requests when switching the light on - but it seems that no one replies. These beacon requests are also recieved near the next router.

Any experience with such a situation?

Thanks in advance!

HA: 2022.12.8
Zigbee: CC1352/CC2652, Z-Stack 3.30+ (build 20220219)