Hypervolt home pro 3 should have the lock feature, it’s in the user guide!
Secure Locking Mode
Locking your Hypervolt Home 3 Pro charger is essential if you want to override any existing configurations and prevent it from accidentally charging. All you need to lock the device is to tap the Lock icon on the homescreen. This icon will allow you to toggle its locked and unlocked status at any time. The LED indicator on the charger will change to orange when the device is locked. However, please take note that trying to lock the charger while there is an active charging session will only work after the session has ended and the EV has been unplugged.
Is wifi connected at the charger?
Either restart the charger by turning the power off for 10 mins and back on or reconnect to wifi.