Matter devices are unavailable

Well now we will see if Athom have done the right steps / improvements for Thread-Matter troubleshooting because i had a Thread Crash again out of nothing… i already report all details again to Athom, this time with all the requested details from Athom after my last Crash…

Here are some lines out from my request to Athom, i only post this lines because maybe someone could help it to see how you should report the fault case like this to Athom.

Crash again out of nothing - report 8E0333B1
After Homey reboot - report A0EB5C58

…after few weeks of more less stable Thread behavior, my Thread crashed again out of nothing during the night, all devices are in idle mode or off…all people are sleeping.

Well, i have already installed the new Homey software v13.5.1 where Athom implement improvements for the troubleshooting for Thread issues!

The Crash starts exact at 03.102026, on 00:40 am with one device (screenshot) and continue at 03:00am (screenshot) with more then 10 devices, Homey attampted to bring the thread topology back but without success, in the Thread-Matter overview you can see devices come and go, there are moments where are till 2 Devices all are back and then breaks all again more then 10 devices…this behavior repeats and repeats again, see screenshot above and attached…so i create all reports, screenshots, ping test, thread informations and made the Homey reboot, after that all devices are immediately back and the topology looks fine, right now again stable since the last 24h.

Since my last crash i made a change of the BorderRouter, weeks ago, i removed my 3 Apple HomePods because i didnt have any usage for them, so at the moment i have 3 BorderRouter (Homey is the Master all devices are teached directly too them, AppleTV and Aqara G5 Pro) in my system…no Zigbee in use on Homey!

I follow your instructions from last time, i made these steps which you recommend me, below the attachments!*

**Athoms requested instructions:
What to send us (so we can correlate fast)
– Failure timestamp + timezone = 03:00am GMT+2 / 04.10.2026
– Homey diagnostics code at failure = Crash 8E0333B1
– 3–5 Ping screenshots = attached **
– Thread Diagnostics screenshots = attached **
– Any BR/power/network changes = no
– Second diagnostics code after recovery = Reboot A0EB5C58

The Ping Tests are made all to the same Device, in faulty and good conditions, also the Thread informations!