astrotam it obeys the "Stop tracking before meridian" command, but when it is time to send the GOTO command for the Meridian flip, nothing appears to happen.
Next time that happens, try aborting the AutoRun and execute a GOTO from the Preview window.
If the mount still does not execute a meridian flip, then the mount thinks that the RA coordinate has not yet transited the meridian. The ASIAIR auto Meridian Flip is trying to do the same thing -- issuing a GOTO and waiting to see if the mount responds with a Meridian Flip. The ASIAIR is not smart enough to execute a Meridian Flip -- it depends on the mount to find out for itself that the target coordinates have transited the Meridian. (There are mounts that can actually pier-side flip on command, but ASIAIR does not make use of that even when available.)
Since you have already checked for correct times and longitudes, the thing left that you need to check is the East-West leveling of the mount.
A single degree (angle) of wrong leveling will account for 4 minutes (time) when it comes to the time for transit.
ASIAIR will keep retrying a number of times (waiting for the mount to actually do a meridian transit) before giving up. But if you are 2 degrees off level, your own patience may not tolerate the 8 minutes of delayed meridian flip.
North-South level is not required for meridian flips, and only needed if you want "blind" GOTO to get close. A plate solve and a Sync and GOTO will resolve any North-South error.
But an East-West level is critical for timing the Meridian transit.
The next time you are out under dark skies, try to set up the mount as you normally do, and execute a "blind" GOTO to a star (or coordinates) on the east of the Meridian and perhaps an hour away. I usually just dial in a round number for the RA and set the Declination near to my latitude.
After the mount has finished slewing to the coordinate, do a plate solve and note the RA that is displayed. Compare this to the RA you had asked the mount to go to. The difference in RA is also the difference in time of the meridian transit. If the RA is off by 10m to the east, you would need to wait a whole 10 minutes from the time ASIAIR thinks the coordinate has reached Meridian, before a meridian flip is performed by the mount. I don't know how many minutes ASIAIR retries before it gives up. I think that it will eventually give up.
By the way, from the plate solve ability as I described above, you can level your mount in the dark without using a bubble level or inclinometer. Just repeat the above after adjusting the tripod leg leveler. You adjust the north tripod leg by watching the Declination error (if the target is close to the Meridian).
We used to do this type of thing with real stars and eyepieces with illuminated crosshairs, but nowadays we have plate solving.
Chen