To fix HomeKit connection issues, please follow these steps:
- Make sure that your iPhone and your Apple Home Hub (iPad, HomePod, etc.) are connected to a 2.4 GHz Wi-Fi network. All your iOS devices must be on the same network to be able to find each other. 
- Close the Apple Home app by swiping up. 
- Wait for at least an hour to give HomeKit time to update. 
- Set up the Smart AC Control V3+ with HomeKit again. 
Please note: the Smart AC Control V2 and V1 are not compatible with Apple HomeKit.

