Bottom half!!

Make sure it does have rapid charging as some GT line models are not fitted with it. (Mine included). It has the rapid charge socket but the bottyhalf is blanked off

Whilst you would expect a drop in achievable mileage yours seems extreme and indicates a fault somewhere.

The instructions on the pay points are pretty good

I think you can use their payment method (see their web page. Many points now take card payments too

To be fair I don’t do many long trips so don’t need to use commercial charge point very often but I use zap map which is independent from the suppliers.

I think it is designed to keep the battery cool. Mine does the same.

If you have pressed start then the only effect you will see when stationary is the light. If light is on sound is off and vice-versa. If you want to change the sound I think you have to be moving.

When still the light comes on and the sound is disabled so that when you drive(below 20mph) there is no sound. If you press it when driving below 20mph you can switch sound on or off and if you press and hold it you can change the sound.

it turns off the pedestrian warning sound which is generated below 20 mph. It should have a red light when off.