You have the home and park labels in the opposite position. I have a Paramount ME and MX+. In the Home position, the position is fixed... This is what you call "Park"- "ASI Mount's DEC turns left with a 90 degree angle". When I park my Paramounts, the will park in any position that I have set as Park.
Why is this important ZWO?
It is important in a remote observatory. The ZWO AM5 will park the telescope RA counter clockwise left about 90 degrees, and Dec counter clockwise left 90 degrees. This will point the telescope at the Zenith. This will change then obstruct roof closure.
What ZWO needs to do?
Reverse the commands for Park and Home.
"Home should be the "ASI Mount's DEC turns left with a 90° angle" - the calibration position
"Park" should be what the user can define at any position - the user set position