Welcome to the User Community Forum @bman98.
I tested the commands you have listed on my thermostat. Here is what I found:
NOTE: the name of my Thermostat is “Wyze Thermostat”
While the thermostat is in Auto mode:
Alexa, What is the Wyze Thermostat Temperature?
Alexa will tell you the actual current temp reading in the room (or the average if you are using a Room Sensor)
Alexa, What is the Wyze Thermostat set to?
Alexa will tell you the set points for Heat and Cool (between).
Alexa, decrease the Wyze Thermostat by 3 degrees.
This does not work. Alexa just repeats the setpoints. No combination of wording will get her to increase or decrease the setpoints.
Alexa, set the Wyze Thermostat to 73 degrees.
Alexa will change the setpoint to the specified temp, however she changes both the heat and the cool with the heat getting the 73° and the cool getting 73° + the 6° DeadZone = 79°. This is also not an option. She responds with "The Wyze Thermostat is keeping the temperature between 73 and 73 degrees.
However, there is a solution if I instruct Alexa to:
Alexa, Switch the Wyze Thermostat to Cool.
Alexa will switch the thermostat out of Auto into Cool and reply “It’s set to cool”
Alexa, what is the temperature in the Wyze Thermostat?
“The Wyze Thermostat Temperature is 73.6°”
Alexa, set the Wyze Thermostat to 70°
Alexa will reply “The AC is set to 70” and she will change the set temp to 70°.
This will also work in Heat mode.
So, while the voice commands you posted do not work, there is a way to get the settings where you want so long as you have the Mode in Cool or Heat. Alexa is not too good at dealing with the Thermostat in Auto mode.
Hope this helps!