I am new to the home automation thing and to Domoticz.

So fare i have made 2 nodes, one ethernet gateway and setup a PI with the Domoticz server. version V2.3530
The one node is running and logging data as it should.
The other node is my test board, it works from time to time and some times it does not work.
Its the same hardware as the room sensor node.
I have a cap on the radio, and do not think that my issue is related to this. I do not get radio fail on the serial monitor.
to day i have seen that the test board node has filled the mysensor gateway node list with 5 pages of nodes that all are identical. they are updated on the same time.
see my attached picture. her is a log from my ethernet gateway: does some one have an ideer what is going on?
An other thing that i have been battling with is this test board node is creating to many devices in the device list.
the devices are than only updatet once.
see device list picture: some how the devices 11, 12, 13, 14 are combined to device 15
i understand that the system combines sensors, but is this normal with so many "dummy" devices?
I would very much appreciate if some one hade the time to give me some advice.