I got an AM5 today and succeeded connecting wirelessly to an asiair pro with these steps:
Connect to the mount with the AM5 app.
set it up to connect to your local Wi-Fi network so it has internet access
upgrade firmware both in the mount and in the hand controller
disconnect, then reconnect the hand controller
turn the asiair on so it’s Wi-Fi hotspot is up
change the Wi-Fi settings of the mount to connect to the asiair
note the ip shown, you will need that when setting up the asiair
Disconnect, then reconnect the hand controller, check it’s still connected to the asiair
start asiair app, choose the AM5 mount, click tcp and enter the IP address you saw in the AM5 app
activate the mount
This did it for me, and the ASIAir could control the mount.