I have run thru the Matter documentation and going to create my own non-standard cluster in my matter device for my own use case. Question is Can I control a non-standard matter cluster by HomeKit SDK? I run thru the HomeKit SDK document but cannot find any hints.

We are building a matter wifi thermostat. The device is working well with Google and Alexa. However, when add the device thru iOS Home App, the home app always show room temperature 0.0c. When working with Google Home, the room temperature can show correctly. Is there any problem with iOS Home App with Matter WiFi Thermostat?