I have the Air 2 and have just started for the 1 st time.   The unit starts up and the Gimbal sets itself but the green lights continue to flash very rapidly
and dont stop.  I try to take of by moving the levers left and right and then back but nothing happens.   What am  I doing wrong?

Sounds like the controller isn’t paired to the aircraft. Go into the app settings and re-pair the aircraft to the controller. When you select it the screen will advise to hold down the power button on the battery for abouf 5 seconds until it beeps. It should pair quickly.
https://dl.djicdn.com/downloads/Mavic_Air_2/Mavic_Air_2_User_Manual_v1.6_enIII.pdf

Hello there, ikonixx. May I know what are you getting from your screen? Also please make sure to download the DJI Fly app from the DJI official website. Here is the link for download: https://www.dji.com/no/downloads/djiapp/dji-fly. The video below might also be helpful: