Why don't I have an outer glow option in "Box Shadows"?

From all the resources I’m reading about, I should have an outer glow option — however, I don’t see it anywhere in the UI. When I go to “Box Shadows” and hover over the “+” button, it says I should be able to add an outer glow. However, it immediately creates a drop shadow, which isn’t what I want.

(I’m trying to add an outer glow to the grid images on my site and don’t want an angle to the shadow)

This is what I have:
Screen Shot 2021-03-18 at 9.24.59 PM

And in the old UI, here was the outer glow option:
Screen Shot 2021-03-18 at 9.32.10 PM

Here is my read-only link.

Outer glow in the old ui was just a preset for outer box shadow. There’s no glow property in CSS. All you have in the UI is all you need to craft a glow.