I love the basic SonOff units and have over 12 running. I like the smart plug form factor so I bought two. From the start I had trouble setting it up. In each case, the app found the device but couldn't get device information, so the installation failed. I must have tried at least 6 times with the same result. So I ordered a replacement and it worked right away. Then I tried again with atomic number two and they installed without any problems as well. So lesson learned: these devices are greatβ¦