No connection when on cellular, everything else works
**Describe The Problem:**
Video stream isn't working on my iPhone when I'm not in the local network. I use an old iPad mini 2 as Homekit hub. Switches are working and also the still image of the camera shows up. When I click on the camera I can't even see a streaming request in the Homebridge log. I activated the "Enable.Video.Stream.Only.Low" option, but that doesn't help.

**To Reproduce:**
Access camera stream in Home-App from cellular. 

**Logs:**
Nothing shows up in the logs.

**Homebridge Configuration:**

```json
        {
            "controllers": [
                {
                    "address": "192.168.10.2",
                    "password": "***",
                    "refreshInterval": 10,
                    "username": "***"
                }
            ],
            "options": [
                "Enable.Video.Stream.Only.Low"
            ],
            "motionDuration": 7,
            "verboseFfmpeg": false,
            "platform": "UniFi Protect"
        }
```

**Screenshots:**

**Environment:**

* **Homebridge Version:** v1.1.7
* **Node Version:** v14.15.4 
* **Homebridge-UniFi-Protect Plugin Version:** v4.3.5 
* **UniFi Protect Version:** 1.16.9
* **UniFi Protect Controller Type:** UCKgen2+
* **UniFi Protect Controller Firmware Version:** 2.0.24
* **Apple Device and iOS / macOS / iPadOS / tvOS Version:** iPhone X on iOS 14.2, iPad Mini 2 on iOS 12.4.9 used as hub
* **Operating System and OS Version:** Ubuntu 20.04

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