Install a digital thermostat

I installed a digital thermostat by the instructions but it doesn’t work. Can you help? 3 years ago

This one device has probably saved us twice it’s cost. I’ve programmed it so that at night it gets cold 55 Degrees F, and in the morning it gets warm 70, and then lowers down to about 65 for the rest of the day. The idea is that during the night we have comforters and blankets to keep us warm in bed, in the morning we take our showers and it needs to be warmer, but during the day we wear warm clothes and don’t need the heat. During the summer it works well also. 5 years ago