Remove Z-wave device


I have a few Neo Coolcam power plugs that are added. They are not visible in the App.
When I go to
I see some unknown node’s.
There are 3 dot’s at the end of each z-wave node line. The option ‘Remove’ is greyed out (this is the case for every node, not only those that are unknown).

How can I remove them, hoping that I can add the plugs again without getting the error that they are already added ?

Using firmware v3.1.0


Click test after a few seconds remove should be available.

And you did removed them with…

Setting… zwave… remove device, and see whats happend?