How to control HUB when Wi-Fi is offline?

No, Hub can’t be controlled offline. During a temporarily interruption of your Wi-Fi or internet connection, ibebot Hub will pause synchronization until your connection resumes, when it does, you’ll then be able to access your data and turn on and off the main plug.

An exception to the rule, if you are beside your main plug you can turn on and off by pressing the power button.