Alexa Home Assistant and Aqara Thermostat E1

Hi. Its my first time here. I hope I can explain the problem correctly and sorry fro my English.
I bought new aqara thermostat E1 , before I had Comet Plus via FritzBoclx DECT.
Cause I have other Aqara devices, I bought the Thermostat E1.
I connected Aqara devices via Aqara Hub und with HomeKit to Home Assistant. My Alexa is connected via Nabu Casa Cloud.
Now I got a problem that Alexa set temperature on the thermostat wrong. I think it calculate my Celcius temperature to Fahrenheit. But I don’t know.
I needed to connect Alexa to Aqara Hub via Aqara Cloud to set temperature correctly.

Does somebody know the issue or can help? Please. Thanks