Thank you for reaching out and we're sorry for the delay.
Yes, you can control or manage your temperature using the Nest app and your Nest Thermostat.
A few questions - Which Nest Thermostat are you using? Did you add the thermostat to your account already? Do you see the thermostat light up when you change the temperature from the Nest app?
I hope to hear from you soon.
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Hope this helps!