HS300 Displays as off when in fact it's on.
<!-- Provide a general summary in the Title above -->

### Expected Behavior
Plug Status display as On when it is in fact On and Off when it is Off.

### Current Behavior
Plug Status displays as Off when it is in fact On.


### Steps to Reproduce (for bugs)
Running the plug-in.

### Versions
<!-- Please run commands and include versions below. -->
- **Node**:       `14.15.3 `
- **HOOBS**: `Hoobs --version 3.3.3 `
- **OS**:         Running on Hoobs

### Configuration
<!-- Please include the TplinkSmarthome platform section of your config.json file.
Paste between the the two ``` lines below.
-->
```json
 {
            "platform": "TplinkSmarthome",
            "plugin_map": {
                "plugin_name": "homebridge-tplink-smarthome"
            },
            "name": "TplinkSmarthome",
            "addCustomCharacteristics": false,
            "deviceTypes": [
                "plug",
                "bulb"
            ],
            "timeout": 30,
            "transport": "tcp"
        },
```

### Homebridge Log / Command Output
<!-- Paste relevant output between the two ``` lines below
  - Remove any sensitive information, passwords, etc.
  - If output is long:
    - Please extract only the relevant portions if possible (remove other plugin's output, etc)
    - Consider creating a gist, etc
  - However, please include the beginning of the log where the homebridge initialization happens if possible
-->
```
2021-03-03, 5:40:40 PM [HOOBS 6181@On] The read handler for the characteristic 'On' on the accessory 'AppleTV - Family Room' didn't respond at all!. Please check that you properly call the callback!
2021-03-03, 5:40:40 PM [HOOBS 6181@Outlet In Use] The read handler for the characteristic 'Outlet In Use' on the accessory 'AppleTV - Family Room' didn't respond at all!. Please check that you properly call the callback!
2021-03-03, 5:40:40 PM [HOOBS 6181@On] The read handler for the characteristic 'On' on the accessory 'Speakers' didn't respond at all!. Please check that you properly call the callback!
2021-03-03, 5:40:40 PM [HOOBS 6181@Outlet In Use] The read handler for the characteristic 'Outlet In Use' on the accessory 'Speakers' didn't respond at all!. Please check that you properly call the callback!
2021-03-03, 5:40:40 PM [HOOBS 6181@On] The read handler for the characteristic 'On' on the accessory 'MacPro' didn't respond at all!. Please check that you properly call the callback!
2021-03-03, 5:40:40 PM [HOOBS 6181@Outlet In Use] The read handler for the characteristic 'Outlet In Use' on the accessory 'MacPro' didn't respond at all!. Please check that you properly call the callback!
2021-03-03, 5:40:40 PM [HOOBS 6181@On] The read handler for the characteristic 'On' on the accessory 'PBX' didn't respond at all!. Please check that you properly call the callback!
2021-03-03, 5:40:40 PM [HOOBS 6181@Outlet In Use] The read handler for the characteristic 'Outlet In Use' on the accessory 'PBX' didn't respond at all!. Please check that you properly call the callback!
2021-03-03, 5:40:40 PM [HOOBS 6181@On] The read handler for the characteristic 'On' on the accessory 'Drobo' didn't respond at all!. Please check that you properly call the callback!
2021-03-03, 5:40:40 PM [HOOBS 6181@Outlet In Use] The read handler for the characteristic 'Outlet In Use' on the accessory 'Drobo' didn't respond at all!. Please check that you properly call the callback!
2021-03-03, 5:40:40 PM [HOOBS 6181@On] The read handler for the characteristic 'On' on the accessory 'Switch' didn't respond at all!. Please check that you properly call the callback!
2021-03-03, 5:40:40 PM [HOOBS 6181@Outlet In Use] The read handler for the characteristic 'Outlet In Use' on the accessory 'Switch' didn't respond at all!. Please check that you properly call the callback!
2021-03-03, 5:40:40 PM [HOOBS 6181@On] The read handler for the characteristic 'On' on the accessory 'Router' didn't respond at all!. Please check that you properly call the callback!
2021-03-03, 5:40:40 PM [HOOBS 6181@Outlet In Use] The read handler for the characteristic 'Outlet In Use' on the accessory 'Router' didn't respond at all!. Ple
```
