If the internet stops working, everything in your home will still work as before.
Time settings, heat control, light switch control and automations will still work even without internet.
If you have a mode switch, you can still switch modes, which perform the predefined actions.
The only thing you lose if the internet stops working is the ability to control the home from the Futurehome app and receive push notifications from Smarthub.
Smarthub not responding
Please check that your Smarthub is connected to internet and power, and that you have a working internet connection.