Check that the black from the 2-conductor romex goes to the line on the Inovelli.
Check that the red and black from the left 3-conductor romex go to the traveler terminals on the dumb switch and that the other black wire goes to the common terminal.
In the big box
Hot wire to the “neutral” of the aux switch and to the black of the 3-conductor.
Traveler of the aux switch to the red wire.
White wire gets connected to the load hot conductor.
In the small box,
Black wire to the line.
White wire to the load.
red wire to the traveler.