Sorry. Was just posting that for posterity. I’ve been playing with the node_protection setting in Home Assistant and made 2 of my switches non-operable via zwave commands. Found another thread in the meantime which seems to suggest that this is a combination of a bug in older(?) switch firmwares when it is sent an outdated zwave protocol on the Home Assistant side. My current problem is not having a Windows PC to update the switches but that’s not a problem for this forum.