Radio Thermostat Company of America CT100 Plus Thermostat Not setting target temperature

I have Radio Thermostat Company of America CT100 Plus Thermostat. I am not able to set target temperature as it is showing as null (see below). Any idea why?

hvac_modes:
  - heat
  - cool
  - 'off'
  - heat_cool
min_temp: 45
max_temp: 95
fan_modes:
  - On Low
  - Auto Low
preset_modes:
  - Heat Econ
  - Cool Econ
  - none
current_temperature: 69
temperature: null
target_temp_high: null
target_temp_low: null
fan_mode: Auto Low
hvac_action: idle
preset_mode: none
node_id: 36
value_index: 0
value_instance: 1
value_id: '72057594647150596'
fan_action: Idle
friendly_name: Thermostat - Mode
supported_features: 27