We've recently found an issue with the Linear product (*model ID: 127420) that may cause a broken Matter experience. Thus, we strongly suggest you update the device if you would like to try Matter.  
 
How to update your device?
- Go to “Settings > Integrations"

 - Choose "Matter"   

 - Tap your ”Linear” 

 - It might load for a few seconds

 - Once the new pairing code is generated, the device should be updated

 
  *Please be aware that once you've done the above flow, the new QR code and 11-digit code on app would be different from the ones in your packaging. Please use the codes on app.