Useless, temperature setting not working!

Cmon honeywell, fix this damn app! when I change the temperature setting on my zwave honeywell thermostat using this app, it does change temperature, but only in two sets, either 40C or 4.5C. So, if I set it on 20C, the temperature on my local thermostat, is 40C. If I set to17C, it will set to 4.5C.
Well, not to mentioned, it crashes most of the time.
What a joke.

Jemel jar about Total Connect 2.0, v2.2.0