What does the different coloured lights on GINA mean and can I turn the light off?

RED, flashing - GINA is very low on power, connect to the charger as soon as possible.

BLUE, flashing - Awaiting connection with the app.

BLUE - Connected with the app.

GREEN - Contact maintenance.

No, you cannot turn off the blue light. The only way to turn it off is by discharging the battery.