Lost Z wave control

Generally support has to address this issue.

There is one other possibility–if you have any Sonos devices, remove all of them except one. This shouldn’t have any impact on zwave, but it does for some accounts.

More likely, though, you have some “ghost” devices on your account and support can help you identify and remove them.

There is also a thread in the forums on Z wave repair failing that has some additional information: