Luxo
I'm assuming none of them had "New Plate Solve" selected under experimental features in the about section?
And you're saying the plate solve issue was present for people on both Android App 2.4.3 and Apple App 2.4.2 ?
What. version of the Android OS and what model Android devices are they using?
What version of iOS/iPadOS and what model Apple device are they using?
Can you also test what happens when you only have the absolute minimum connected when using 2.4 3 / 2 4.2?
I.e. OTA, mount, main camera only
Disconnect from the ASIAIR and/or cameras any CAA, EAF, EFW, etc.
So the only thing would be:
Power in to ASIAIR
camera to usb 3.0 port
Mount to usb 2.0 port
Nothing or only one power out to camera
Don't do autofocus routines, guiding, etc etc.
So you'll have to manually focus the OTA (very it roughly or as close to focused before polar alignment).
With that setup and after Polar Alignment succeeds do this:
Open Mount Settings > select go home. Check it returns to Home position.
Open Mount Settings > select Sync Mount.
Now, while in Preview Mode, choose a Bright Star to Go To in order to manually refine focus. See if you have success in platesolving, centring, and enabling Mount tracking to stay on target.
If it works - go to focus mode and use a bahtinov mask to refine focus.
Once achieved, go to Mount Settings > Go Home then Mount Settings > Sync Mount.
Now see if you can Go To a target.