It was working fine day 1 but I'm on day 3 and the ctrl, alt and windows keys do not work (probably other keys, too. Those were just the quickest to notice.)
 
Tried downloading the Unleash RBG software but it's only compatible with PC. EVGA customer support confirmed this.
 
I'm hoping there's just some key I accidentally hit that caused this, as opposed to some glaring fundamental compatibility issue w/ Mac OS.
 
Gaming mode was toggled on & off and that didn't help. Tbh I don't use the keyboard for gaming so i'm not sure what this function does, but I figured I would try that when I was troubleshooting.