I bought by Air2S only at the beginniog of the month, flown it 4 times and the last 2 times I keep getting a warning about the downward sensor not calibrating.
I did the latest firmware update but still get the same message.

I eventually found that by using the consumer version of DJI Assistant I could recalibrate the sensors.  Took 3 computers to get there, first one didn't have a flat screen, 2nd one the OS was too old, eventually used my  2017 intel MacBook Pro.
Then I had to recalibrate the Controller.  But eventually everything is working just fine.

Now if I could only get the Flight Simulator to work.

Hello there Angel Wings FS. I am sorry for the trouble this has caused before and it great to know that the issue has been rectified. Have a safe and a happy flying always.