Problem with ZWave Shutter - Node Status Probe

I have a Netichome / Qubino Shutter Module that stopped working for actually no reason at all.
Actually that node might be a little bit on the edge of my ZWave Network but so far I didn’t have any troubles with that particular actor.

At the moment I’m still running the depricated 1.4 ZWave Integration (didn’t have the time yet to try the upgrade).

Now my actor is in Status Probe. I don’t know what that means and what there is actually the best way to get it back working?
I don’t want to exclude or reset the actor to make a new include, because this is somehow an annoying work, because the actor isn’t easily to access.

When I try to heal the node, is there anything I have to do with that particular actor, like disconnecting power for some seconds?