Thanks, @Jai.GAY, @Juergen-Fahlbusch.
Resolved!
Hobbywing support contacted me and the correct thing to do was to turn off the checkbox on the Drone can GUI tool screen.
I had been under the illusion that it was correct to have the check box turned on, because on the description page, the screen said “Push” for the check mark.
Thanks for the time you guys have spent on my precious time.
Appreciate it.
I’ve got all my problems fixed now and can do the following.
I am connected to FC at 1Mbps.
Both NodeID and ThrottleID have been changed.