It may not matter, but here is the text of my support request, so stop speculating please:
Hello,
I want to report a serious and highly disruptive Matter stability issue on my Homey Pro.
System
Homey model ID: homey7q
Homey version: 13.1.1
Issue
At the moment, Homey loses connection to multiple Matter devices every night, typically between 00:00 and 03:00. This is happening consistently and is no longer an occasional incident.
The issue affects both:
Matter over Thread
Matter over Wi-Fi
Examples of affected devices include:
Eve Energy
Eve Door & Window
Onvis S4
Eve Thermo
Freedompro Matter Roller Shutter (via Apple Home Multi-Admin)
Why this is a serious problem
This is not just a technical inconvenience. It directly affects daily life and core home functions.
When Homey loses these devices during the night, important automations fail the next morning. For example:
rooms are not heated when we get up,
motion-based lighting does not switch on,
and multiple automations depending on Matter devices become unreliable.
That is simply unacceptable for a device in this price range. A Homey Pro is not a cheap hobby product. It is supposed to be a reliable smart home controller, especially for essential automations used every day.
Observed behavior
Multiple Matter devices become unavailable overnight.
Error messages include:
“This device is currently unavailable.”
“Matter is not available. Please try again later.”
“A timeout occurred. Please make sure the device is turned on and connected…”
Rebooting Homey restores the situation, but only temporarily.
The same problem returns again the following night.
Important observation
Devices that are shared to Homey through Apple Home Multi-Admin continue to work perfectly in Apple Home while they are unavailable in Homey.
This strongly suggests that the devices themselves are still functioning correctly and that the problem is on the Homey side.
I also have an error log / screenshot showing repeated failures during the affected time window.
Because the problem affects multiple device types and both Matter transport types at the same time, this appears to be a platform-level Matter stability issue rather than an isolated problem with one specific device.
I am asking you to treat this as a serious reliability problem. Please let me know:
whether this is a known issue,
whether additional diagnostics can be collected,
and what concrete steps can be taken to resolve it.
Having to reboot Homey regularly just to restore basic smart home functionality is not an acceptable workaround.
Best regards,
Pascal Nohl
---- And the reply ----
Hi Pascal,
Thanks for reaching out to us and reporting this issue.
I have checked the logs of the diagnostic report you send along.
In these logs I saw many undervoltage notifications.
A faulty power adapter or USB-C cable can cause some instability.
Please test your Homey Pro with a different adapter. Make sure it has 5V and at least 3A (3000mA) output. Use for example the power adapter of your Smartphone.
If this does not resolve the issue please test using a different USB-C cable. Could you try testing it again with a different USB-C cable, one that supports data transfer. These are usually labeled as “USB 2.0,” “USB 3.1,” or “USB-C to USB-C data/charging
If this resolves your issue please send us your full address details so we can send you a replacement power adapter and/or USB-C cable.
Please let me know if your Wi‑Fi/router if it performing scheduled tasks between 00:00–03:00? Could you check this please?
Could you send me a new Diagnostics Report? To do this, please open the Homey app and go to More (…) → Settings → General → Create Diagnostics Report.
You will receive a unique ID. Please copy and paste this ID in your reply to this email so I can review the diagnostics.
I look forward to hear from you.
Thanks in advance.
---- And again my reply -----
Hi XXX,
I connected the Homey to a 60W USB-C PD charger this afternoon, and the Homey restarted. I am now using a high-quality, fully featured USB-C cable that supports PD, 4K, and Ethernet.
Unfortunately, the same issue occurred again. At around 22:30, I noticed that many Thread/Matter devices were missing once more. I created a diagnostic report, and the report ID is: XXXXXX.
This problem is extremely annoying and makes the system unusable for daily operation.
For reference, my Wi-Fi access points are ASUS XT units. On the 2.4 GHz band, they are configured to use 20 MHz bandwidth with beamforming disabled. Wi-Fi is on channel 1. Homey is using Zigbee/Thread channel 15. The access points are running the latest firmware and are not performing any automated actions.
Best regards,
Pascal
----- A shortened version of my next mail -----
Hi XXXX,
I see that my Homey’s last backup was the 13/04/2026. Why does he not backup ?
----- And the reply -----
Hi Pascal,
Thanks for the update.
The fact that your Homey Pro hasn’t been creating automatic backups since May 14, 2026, may indeed be related to the timing of the flow you created to restart your Homey Pro.
If this flow runs around the same time the backup is being created, it could indeed cause a conflict.
You could try disabling this flow for a day and then check to see if an automatic backup was created? Please let me know how that goes!
You could also try creating a local backup using your PC, laptop, or MacBook.
Connecting Homey Pro to a PC or Mac with USB, Choose Create Back Up.
Could you let me know if that works?
I look forward to hear from you.
Thanks in advance.
----- END -----
There has still been no follow-up regarding my original Matter problem. No request for a new report, no quetions to answer.
I also reported that my Homey backups were failing and asked whether this might be related, because the devices often became unavailable at approximately the same time the scheduled backup should have been created. I did not claim that the backup was necessarily the cause; I simply asked whether there could be a connection worth investigating.
Again, there was no follow-up from Athom.
For comparison, this is the message I received from TP-Link support after I had not replied to them for only 24 hours:
Hello,
We are hopeful that you’ve had a chance to review the latest reply from our support team. We are expecting further information from you to proceed with this ticket.
If you’d like to provide an update or require more time to work through our latest message, please simply reply to this email to let us know.
That is the difference I am trying to describe.
TP-Link actively follows the case, notices when information is still missing and asks whether I need more time. With Athom, I report recurring device failures, provide diagnostic reports, mention a potentially related backup problem and ask a specific technical question — and then hear nothing further.
Nobody expects every problem to be solved immediately. However, users should at least receive confirmation that their observations have been reviewed, whether a possible connection has been ruled out, and what the next step in the investigation is.