Can't include devices anymore

[Merlijn]

Hi,

I don't have the slighest idea why, but Domoticz doesn't recognize devices anymore. I've tried with three different devices, of which i am sure they are in inclusion mode. Domoticz enters inclusion mode and says: including zwave node, but nothing happens.
I use a raspberry pi 3b and a zwave.me zwave stick. The network itself works fine and all devices respond within the network.

Any suggestions are welcome!

Thanks.