@Marvin_S thanks for the reply. Following steps are already performed without success. 1. Reset the satelite deco and connected again in the app 2. Swap satelite deco with main deco. Then main deco...

The main deco works fine and shows green led. However, the satelite goes to red led as soon as I move it more than a meter from the main deco. Also none of the devices are connected to the satelite...