Constant loss of connectivity. Devices constantly disappear from the app. No way to restrict control of other devices on the network. Its pretty awful to be honest. The very basic advice they have left below does not solve the problem and frankly, the old ridiculous IT guy goto of "have you tried rebooting" is indicative of there "blame the client for our terrible product" attitude that seems to have consumed all things Google of late. Too bad really, a postmortem to the death of an innovator.