Sonoff Zigbee Motion Sensor SNZB-03

### What issue do you have? Please be as thorough and explicit as possible.

While using the motion sensor, sometimes it gets stuck on “motion detected”. At first I thought it was a problem with the device or the eWeLink app, but when I restart homebridge, the sensor stays in no motion detected until I wave in front off it, it then flashes the red light but doesn’t trigger any automation, and the movement is not logged in the eWeLink app.
But after a while, and one or two attempts, everything starts working as expected.


### Details of your setup.
* Do you use (1) Homebridge (+ config-ui), (2) Homebridge (CLI) or (3) HOOBS? 

I use homebridge+config-ui


* Which version of Homebridge/HOOBS do you have?

I have homebridge 1.3.1, but it happened in previous versions.

* 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.

I run homebridge in a Raspberry Pi, Node.js version 14.15.5 and NPM 7.5.4


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

I have version 4.7.6, it happened on previous versions.

* Which eWeLink devices do you have that are causing issues? Please include product models if applicable.

I have some zigbee temperature and WiFi door sensors working with no problems, theming issue is with zigbee motion sensor SNZB-03


### Please paste any relevant logs below.

no relevant logs as I’m aware.