I just set up HA OS. I got Zwave working through the Zwave JS Addon, but I want the additional features of the Zwave JS UI. I installed it, and stopped the Zwave JS Addon, and started the ZUI. When I add the device (/dev/ttyACM0) and hit Save, it says “Driver: Failed to open the serial port: Error Resource temporarily unavailable Cannot lock port (ZW0100)”.
I didn’t add the security keys, but I don’t think that’s the problem.