[Support] How to add shelly bridge to iPhone by pin not QR code
Hi 
I want to know how add my shelly bridge to HomeKit without QR code. 
**Describe what you have tried so far**
 The first what I do,  I added for example "pin": "777-77-777" to config.json. When I restart Homebridge my configuration disappear and stayed default config.json.
 Is it some solution solve this issues

**Environment:**
 - Shelly device
 -homebridge-shelly v0.19.1
 - Device running homebridge: Raspberry Pi 3
