Some say it's an incompatibility between Celestron firmware and the ASIair that causes a problem with PA. Manually done PA is actually faster once you get use to it and sometimes is preferred.
Celestron mounts have always had a problem with going to the home position. With my CGX I shutdown the ASIair either manually in the app or using the shutdown button. I then disconnect at the HC and send it home the old way and then hibernate the mount.