Unifi Protect doesn't work properly over OpenVPN (LTE works)
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**Describe The Problem:**
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I have a primary home with Unifi Protect and UDM PRO. I have a secondary home setup over UNIFI VPN using OpenVPN. The connection works great and I can access UDM PRO, Unifi Protect, local LAN in the primary home. 

I can access and see Unifi Protect via Apple Home App when using LTE, but whenever I connect to WIFI in 2nd home and try to access the camera it never opens up. I'm pretty sure this is not a fault of your plugin but wondering why would this be a case and what sort of checks I could do to fix it?

I've not set up any special firewall rules, just standard OpenVPN Site-2-Site.

**To Reproduce:**
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Not sure it's reproducible. I can provide steps on how to configure OpenVPN but not sure it's worth the effort. 

**Logs:**
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HomeApp via WIFI (doesn't work)
```
[3/29/2021, 10:08:37 AM] [UniFi Protect] EvoUDM [UDM-PRO]: Controller refresh interval set to 10 seconds.
[3/29/2021, 10:57:14 AM] [UniFi Protect] EvoUDM [UDM-PRO] UVC G3 Dome [UVC G3 Dome]: Streaming request from 192.168.241.49: 1280x720@30fps, 299 kbps. Using RTSP stream profile: 1920x1080@30fps (High), 6000 kbps.
[3/29/2021, 10:58:14 AM] [UniFi Protect] EvoUDM [UDM-PRO] UVC G3 Dome [UVC G3 Dome]: Stopped video streaming session.
```

HomeApp via LTE (works):
```
[3/29/2021, 10:58:52 AM] [UniFi Protect] EvoUDM [UDM-PRO] UVC G3 Dome [UVC G3 Dome]: Streaming request from 192.168.241.49: 1280x720@30fps, 299 kbps. Using RTSP stream profile: 1920x1080@30fps (High), 6000 kbps.
[3/29/2021, 10:59:12 AM] [UniFi Protect] EvoUDM [UDM-PRO] UVC G3 Dome [UVC G3 Dome]: Stopped video streaming session.
```

The difference is - in the first one the stop streaming session happens when it times out rather then when stream ends. 

**Homebridge Configuration:**

```json
        {
            "options": [
                "Enable.Audio.TwoWay"
            ],
            "controllers": [
                {
                    "address": "192.168.241.1",
                    "password": "",
                    "username": "homebridge"
                }
            ],
            "platform": "UniFi Protect"
        },
```

**Screenshots:**
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**Environment:**

* **Homebridge Version:** 1.3.4
* **Node Version:** v14.16.0
* **Homebridge-UniFi-Protect Plugin Version:** 4.4 and 4.3.5
* **UniFi Protect Version:** 1.17.4
* **UniFi Protect Controller Type:** UDM PRO
* **UniFi Protect Controller Firmware Version:** 1.9.2
* **Apple Device and iOS / macOS / iPadOS / tvOS Version:** newest iOS
* **Operating System and OS Version:** hosted on Synology Docker

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