Help for downlanding rhino trial version

I downloaded trial ver in this site (https://www.rhino3d.com/download/rhino/evaluation/?skipsurvey=true&notrack=1)

In this site, I checked the agree checkbox and click download button.

but i can’t open the dmg file in my mac

my mac is macbookpro(2018)

Hi 이유진 -

Which version of macOS are you running on your Mac?
-wim