@Brook My light switch is, now, working. Thanks.

@Kiwifruit Brook: Thank you for your reply. You said, "please feel free to update it here." Where is "here"?

@Kiwifruit I just installed an HS200 Smart Switch, today, and had the exact same issue with the "failed: invalid device" message. I chatted with tech support, and they could not help me either. If...