Bathroom Glass Shelves

I have no idea how to take down two shelves that are in the bathroom. They are metal and glass shelves of Restoration Hardware (Spritz model) that my ex put in place.
Basically it is a round metal disc with emerging media and the glass is sandwiched between the two. You can see a photo on their website.
I do not see any screws anywhere. Can not push aside the metal sufficient to remove the glass, The only thing I can see is a small hole at the bottom of the metal disc. Perhaps the size of an eyeglass size (small) screwdriver.

Suggestions?

hole at the bottom will be a small screw driver slotted or Allen wrench, loosen and tilt slightly upward and lift it.

Hammer.

It is from your ex, you do not care.