I’d set up latest waypoint in auto mission as landing and it start working out of the box.
I’d adjust Flare altitude to 10 meters. No more adjustments were made.
In this video I’d missed flare altitude (too low) but autolanding works…
I have other planes with older arduplane versions with RTL_AUTOLAND=0 and landings are normal.
If you have a look at the landing airspeed it is very low vhile in the parameters I set it high.
It is like te landing airspeed setting is ignored during autoland. The plane looses speed and crushes.