Matter lights go "offline" after a few hours on Asus Router

[AdamWuertz]

I purchased some Black and Decker Matter compatible under cabinet lights (LEDUC126CCTPWACK). I can use the Google Home app to scan the QR code and set them up fine and then they will work via voice, schedules, and the app for a few hours after which Google Home reports them as "offline".

However, they are still in my router's client table and their IP lease is still ticking away.

If I reset the router they work for a few hours again.

I have an ASUS RT-AC88U router with the latest firmware. 

Any ideas what setting in the router might be causing this?

[Rusell]

Hi AdamWuertz,

Thank you for posting in the community. I understand that you have Matter lights, but they show as offline in the Google Home app and come back online when you reset your router. I'm happy to help you!

To provide you with the best assistance, i'd like to ask you a few questions below:

• When did the inconvenience start? 
• What troubleshooting have you done so far? 

In the meantime, please follow the troubleshooting steps:

Unlink and relink the device:

• Unlink
  • Open the Home app .
  • Tap Settings and then Google Assistant and then Home Control.
  • Tap Settings and then Google Assistant and then Home Control.
• Relink
  • Open the Home app .
    
  • Tap Settings and then Google Assistant and then Home Control.
    
  • Tap the Search box, type the name of the Home Automation partner then link the account.

Note: If the home automation account is listed under Linked Services, tap “Reconnect account” then follow the on-screen instructions.

Keep me posted.

Best regards,

Rusell. 

[AdamWuertz · Accepted solution]

Rusell,

I think I may have solved the problem.  I went into my router and assigned the lights a static IP.  I think because matter communications occur over the local LAN the Google Home gets messed up when the DHCP assigns a new local IP address to the lights.  It has now been working reliably for a week.  I will update if it goes "offline" again.

[Rusell]

Hi AdamWuertz,

Thank you for your update. I'm glad to hear that the inconvenience has been resolved and i appreciate you for the steps that you have done. 

If you have any further questions, please don’t hesitate to reply to this post. I'll be happy to assist you further!

Best regards,

Rusell.