Motion not picked up until person at front door

I have my Ring Doorbell 2 mounted pointing straight out from my door towards my front drive and ultimately the street and drive goes on for about 110 feet so cars passing at the end of the drive are not a problem for motion detection. I have the app set to pick up movement at 30 feet or more, motion verification enabled, motion zone set at maximum and all three zones set to on and people only mode switched on. However, motion is not detected until the person is at the front door and when that person leaves, basically only recording a small facial section and the back of the visitor. This is not what the Doorbell was bought for and if it doesn't pick up people approaching it is basically useless. Is there anything further that needs doing to correct this?