You can disable the smart charging functionality of the ev.energy app at any time by going to your Smart tab and tapping 'Turn off smart charging" (found at the bottom of the page).
This will set your car/charger into what we call free vend. This means your car will charge whenever you plug it in and will stop charging when the cable is removed or the battery is full.
We highly recommend keeping smart charging switched ON so that you continue to get the benefits of smart charging your vehicle.