Climate sensor update interval is too slow. Asking support about it, they just say it can not be changed, no other explanation given. So to make it work the way I want, I needed to attach a small motor over arduino, that pushes the physical button on the climate sensor to update the values in regular intervals. So it can be done, nedis just simply refuses to listen to their customers. App also has inconsistencies. Temperature can only be set through a slider, that changes value on slightest touch, so it takes unnecessary extra time fiddling with the slider to get the right value. Support ignored this.