Problem in homekit "accessory not responding" 
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### What issue do you have? Please be as thorough and explicit as possible.

Problem in homekit "accessory not responding" 
In ewelink apps the switch is available and working

### Details of your setup.
* Do you use (1) Homebridge UI-X (2) Homebridge CLI or (3) HOOBS? 
3


* Which version of Homebridge/HOOBS do you have?

HOOBS 3.3.12

* Which platform do you run Homebridge/HOOBS on (e.g. Raspberry Pi/Windows/HOOBS Box)? Please also mention your version of Node.js/NPM if known.

Linux Ubuntu 20.04.2 LTS 
Node Version  14.17.2


* Which version of this plugin (homebridge-ewelink) do you have? Has the issue started since upgrading from a previous version?
8.0.2


* Which eWeLink devices do you have that are causing issues? Please include product models if applicable.
![IMG_5267](https://user-images.githubusercontent.com/12997195/129597828-35fa2fa8-9bb8-4dfe-9b89-72ddae7eb48e.PNG)



### Please paste any relevant logs below.
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```
hoobs -d  |grep "eWeLink"
[16.08.2021, 19:34:13] Registering platform 'homebridge-ewelink.eWeLink'
[eWeLink] Initializing eWeLink platform...
[eWeLink] Initialising plugin v8.0.2 | Node v14.15.1 | HB v1.3.4 | HOOBS v3...
[eWeLink] Config entry [debugReqRes] is unused and can be removed.
[eWeLink] Config entry [sensorTimeLength] is unused and can be removed.
[eWeLink] Config entry [sensorTimeDifference] is unused and can be removed.
[eWeLink] Config entry [valveTimeLength] is unused and can be removed.
[eWeLink] Config entry [hideTHSwitch] is unused and can be removed.
[eWeLink] Config entry [hideZBLDPress] is unused and can be removed.
[eWeLink] Config entry [disableHTTPRefresh] is unused and can be removed.
[eWeLink] Config entry [inUsePowerThreshold] is unused and can be removed.
[eWeLink] Config entry [lowBattThreshold] is unused and can be removed.
[eWeLink] Config entry [resetRFBridge] is unused and can be removed.
[eWeLink] Plugin initialised. Setting up accessories....
[eWeLink] Sending HTTP login() request.
[eWeLink] Web socket host received [eu-pconnect6.coolkit.cc].
[eWeLink] Sending WS login request.
[eWeLink] LAN discovery starting.
[eWeLink] WS login successful.
[eWeLink] LAN discovery complete.
[eWeLink] LAN monitoring started.
[eWeLink] [Кухня] initialising with options {"logging":"debug","showAs":"default"}.
[eWeLink] [Кухня] initialised and found locally with IP [192.168.3.12].
[eWeLink] [Спальня с балконом] initialising with options {"brightnessStep":1,"logging":"debug"}.
[eWeLink] [Спальня с балконом] initialised and LAN mode unavailable as not discovered/supported.
[eWeLink] ✓ Setup complete. This plugin has been made with ♥ by bwp91 from the UK!
[eWeLink] [Кухня] receiving update {"switch":"on","online":true,"updateSource":"LAN"}.
[eWeLink] [Кухня] current state [on].

```
