I just happened across someone else having similar issues to be with the Celestron Evolution support on Mac (via Celestron WiFi). I think at least one of my problems might actually be a documented difference but I cannot find a reference to it.
1) StarSense support is not parity with iOS? The StarSense works perfectly on iOS but I cannot find any option to use on the Mac
2) Align button does nothing on Mac (as per this thread)
3) Connecting to a scope that has been aligned correctly from iPad shows a different set of positioning coordinates on Mac. I verified that both devices have the same location set but the Mac consistently shows a completely different set of coordinates to the iPad (the iPad is correct)