"Matter is not Setup" comes in endless circle

Configuration Matter/Thread
1

Hi together,
I did succesfull install the Matter Server and the Matter Server is running fine. However if I try to add a matter device, I get the message “Matter is not setup”. After confirming to proceed the setup Ill get the message "Succesfully reconfigured the Matter integration". When I try now to add a Matter device, the whole procedure starts again. Its endless…
Does anyone has the same problem and a solution for it?

2

i’m not sure, but let me ask, are you trying to add a device using HA Companion App on a mobile device?

3

Yes I did, Theres no difference, if I do it on PC or IPhone via HA Companion…

4

A bit strange. Only thing I can speculate is that the Matter Integration has not actually connected to the Matter Server AddOn. If you go to the Matter Integration and do a reload, does it ask for any input? Is there any error in the HA Core Logs?

5

If I do a reload, it ends in the same situation.
The Log show only this two Errors:
2025-12-25 20:00:16.833 (Dummy-2) CHIP_ERROR [chip.native.DIS] Failed to advertise records: src/inet/UDPEndPointImplSockets.cpp:417: OS Error 0x02000065: Network is unreachable

2025-12-25 20:00:16.839 (Dummy-2) CHIP_ERROR [chip.native.DL] Long dispatch time: 136 ms, for event type 2

But I assume its regarding I do not have separate hardware for thread. Its the plan NOT to use thread, just Wifi.

And this is the final entry of the log:
2025-12-25 20:00:17.148 (MainThread) INFO [matter_server.server.server] Matter Server successfully initialized.