Update Program.cs
Update Program.cs

The items definition in line 69 & 70 should be : [% .1f] °C & [% .2f] °C
The way the template defines items now ( [% .2f °C] & [% .1f °C ] ) is not supported by openhab2. The effect is , that none of the "proxy" items is created in openhab2.
BoBiene/ContromeToOpenHAB