Internet connected devices are a mistake. Not only is there non-existent security updates for the device, it means there is a timer on the life of the functions of the device. If a device cannot function offline, you will have a gimped (or completely dead) product soon.
functions like scheduling a charge will no longer work
Case and point. Why did the device ever need the internet to run a clock? It didn't, but because it was 'smart', now it can't operate a basic time function.