CHERAINTIShoe Stretcher for Women Men, Stretch Length and Width for Wide Feet Adjustable, Shoe Tree Expander Widener

Can this stretcher be adjusted to widen the shoe at the instep, at the middle of the foot, not the toe?

Will this work for stretching toe box of converse high top sneakers? Looks to me like the straight shaft of device wouldn't fit down into shoe.

Will this work on sneakers? Specifically width of toe area.

Can these be used to adjust the height of the toe box? The pictures look like they may only be useful for adjusting the height closer to the ankle.