Homebridge itself shows as "This Accessory is Not Responding" under HomeKit Bridges
<!-- If you have an issue with a plugin create an issue on that plugin's GitHub page instead. -->

<!-- Before opening an issue, please review the Troubleshooting Page on the Wiki to ensure that this is a new issue, and alternatively search the closed issues for similar problems. -->

<!-- Link to the the Wiki - https://github.com/nfarina/homebridge/wiki -->

<!-- Provide a general summary in the Title above -->
This issue is with the Homebridge itself.
**Describe Your Problem:**
<!-- A clear and concise description of what problem you are trying to solve. -->
My Homebridge, iPhone and AppleTV 4K are on the same LAN, however none of the Homebridge accessories are working.  
Looking in HomeKit under Settings -> Hubs & Bridges -> Homebridge it shows "This accessory is not responding".
[**Logs:**]()
<!-- Please paste any relevant log output into a gist or using hastebin-->
<!-- If using hastebin or other text sharing website please make the lifespan long-->
<!-- Paste the link between the two () above -->
<!-- Remove any sensitive information, passwords, etc. -->
<!-- Please include the beginning of the log where the homebridge initialization happens -->
<!-- If needing to link multiple log files please do so between the ``` lines below -->

```
There are no errors in the Homebridge logs, it is able to connect internally to all accessories!
```

**Homebridge Config (sanitized):**
<!-- Paste relevant output between the two ``` lines below -->
<!-- Remove any sensitive information, passwords, etc. -->

```
{
    "bridge": {
        "name": "Homebridge 0D92",
        "username": "0D:9E:34:C2:0D:92",
        "port": 51605,
        "pin": "721-15-820",
        "bind": [
            "eth0"
        ],
        "advertiser": "ciao"
    },
    "accessories": [
        {
            "delay": 5000,
            "disableSensor": false,
            "startOnReboot": false,
            "accessory": "DelaySwitch"
        },
        {
            "name": "Pi Hole Toggle",
            "auth": "6500b726be7a31ddbf98e22b3f2b9ec5d",
            "ssl": false,
            "rejectUnauthorized": true,
            "host": "localhost",
            "port": 80,
            "baseDirectory": "/admin/",
            "time": 0,
            "reversed": false,
            "logLevel": 1,
            "accessory": "Pihole"
        },
        {
            "username": "username",
            "password": "password",
            "name": "Sense Energy Meter",
            "pollingInterval": 300,
            "verbose": false,
            "accessory": "SensePowerMeter"
        }
    ],
    "platforms": [
        {
            "name": "Config",
            "port": 8581,
            "auth": "form",
            "theme": "auto",
            "tempUnits": "f",
            "lang": "auto",
            "platform": "config"
        },
        {
            "controllers": [
                {
                    "address": "192.168.10.20",
                    "password": "udmprotectpassword",
                    "username": "udmprotectuser"
                }
            ],
            "verboseFfmpeg": false,
            "platform": "UniFi Protect"
        },
        {
            "name": "Govee Hydrometer",
            "batteryThreshold": 25,
            "debug": false,
            "platform": "GoveeHomebridgePlugin"
        },
        {
            "email": "email@domain.com",
            "password": "password",
            "name": "LiftMaster-MyQ",
            "platform": "myQ"
        },
        {
            "bonds": [
                {
                    "ip_address": "172.16.20.100",
                    "token": "e97462947424bec5"
                }
            ],
            "include_dimmer": false,
            "include_toggle_state": false,
            "fan_speed_values": true,
            "platform": "Bond"
        },
        {
            "name": "Meross",
            "username": "username",
            "password": "password",
            "ignoreHKNative": true,
            "platform": "Meross"
        }
    ]
}
```

**Screenshots:**
<!-- If applicable, add screenshots to help explain your problem. -->
![image](https://user-images.githubusercontent.com/1452100/130366277-adf1f2a7-d0ee-4665-a49b-9a928a878dac.png)


**Environment:**

* **Node.js Version**: v14.17.5
* **NPM Version**: v7.21.0
* **Homebridge Version**: v1.3.4
* **Operating System**: Raspbian
* **Process Supervisor**: Systemd 

<!-- Click the "Preview" tab before you submit to ensure the formatting is correct. -->
**Notes:**
Based on advice I even went into the HB Settings and changed the [mDNS Advertiser] from ‘Ciao’ to ‘Bonjour HAP’ and restarted HB but no effect, HB logs show it is using "bonjour-hap" however Bridge still shows in HK as "This accessory is not responding", same as in the picture above.
  
Also all attempts at "refreshing" by rescanning the QR code will just throw an error that states: 
'Unable to Add Accessory - Security check failed or action not allowed' 