Thanks, Dave.
I tried checking the 3D box for photoshop layer, and it didn’t change anything as far as I can tell.
When I parented it, the plane disappeared.
I was under the impression that when importing PSD live 3D, individual settings of the photoshop layer were linked to individual settings of the 3D null layer so there is no need to do these two things?
Thanks.
p.s. Now I got a hang of how the plane moves, but still curious what that diagonal red line is and how to orient the rotation/move tools to match the orientation of the plane.