Hi, well issue resolved and unsurprisingly it was me So the first I got home and took a look at logs again and saw that node two has rejected connection and indeed, it not responded from any UI and even from the light switch, restart fixed it, but now I wonder if it will happen again. After that, I used light switches on the third node manualy and they imidietly appeared in HA, but still nothing from DHT sensor. So I took a look at my code and found my error I got mixed some things around. I got code like this before #define CHILD_TEMP 2 // Id of sensor dht #define CHILD_HUM 3 // Id of sensor dht MyMessage msgHum(CHILD_TEMP, V_HUM); MyMessage msgTemp(CHILD_HUM, V_TEMP); So I fixed this like this #define CHILD_TEMP 2 // Id of sensor dht #define CHILD_HUM 3 // Id of sensor dht MyMessage msgHum(CHILD_HUM, V_HUM); MyMessage msgTemp(CHILD_TEMP, V_TEMP); After that, all started to work as expected. Thanks for your input.