NO data from Netatmo thermostat

Hi - after installing netatmo binding and following the entire process of configuration for the API (co i get the secret, the id and so on), i configured this simple item:

Number Temp2 “Temperatura [%.1f °C]” {channel = “netatmo:NATherm1:d0Za2ZZc:040ZZ023cc8c:Temperature”}

all i can get in paperUI is -NaN °C
Any idea?