Domoticz

a question. last Thursday my Xiaomi gatway in domoticz has stopped. I don't no how the plugin is working but there is no conection. i have checked the IP adres thats static in my router and it is oke. Now i wanne check the developer code in the app, but now i see the app has changed and i can't found the code. The manual say click on About button. but i can't found the about button. Are there more people with the same issue. of have somboy a new manual?

The problem changed a litlle bit. i've installed an older APK and i have found the code already. but now domoticz give the next error

Error sending switch command, check device/hardware (idx=...) !

have anybody a id. what the reason can be