Amazon Alexa And Homey

Hello,

I will test the aqara devices soon, just ordered a few

So far i am myself also surprised that most items appear for alexa but some not
The clickaanclickuit plugs are seen by alexa but not the clickaanclickuit shutters…

Same with oregon devices, some are accepted by alexa, the others not

What would be the logic behind ?

edit: The germans found a workaround by creating virtual devices VD Fibaro Roller Shutter 2 mit Alexa-Sprachbedienung