To refresh your light back to the out-of-box state, please follow the below steps:

• Go to the room page and long-press the device you want to refresh
• Then tap settings from the pop-up list 
• Tap the arrow icon beside the device name
• You should see the "Delete device" option

Once remove the device from your WiZ home, the device should be the same as out-of-box. Don't forget to re-setup the device in your WiZ home again for your Matter setup code.