Reply To: Why is my skin modifier not working ?

The Skin Modifier still works the same in 2.92. It can be unpredictable at times, but can also really speed up the blocking.

The problem is your Root is at the red arrow:

Move it to the green arrow by selecting that Vertex and click Mark Root:

If you don’t have a Vertex there, you can make one by subdividing the Edge (that goes along the Y-axis).