homebridge: Can't add accessory to Home app after updating my device to iOS 11.4.1

Current Behavior

Homebridge was working fine when my phone was on iOS 11.4, but all the accessories became unresponsible after updating to iOS 11.4.1.

Have Tried

1. Deleted all accessories and tried to re-add them
2. Changed username and pin in config.json
3. Reinstalled Homebridge and step 2
4. Downgraded Homebridge to 0.4.33 and step 2

All above failed (Home app couldn’t find accessories). However, my iPad with iOS 11.4 can reach homebridge all the time.

Configuration

{
    "bridge": {
        "name": "Homebridge",
        "username": "AA:BB:CC:DD:EE:11",
        "port": 51826,
        "pin": "123-45-111"
    }
}