Same issue.
ROG eye section around PCI slot lights up.
Republic of Gamers logo under CPU lights up.
Maximus XI and Code Logos don't light up at all. (top left section)
Pulled it all apart to see if not a connector / cabling issue. All seems fine, although those plugs and cables are tiny AF.
The modules in the BIOS seem to reflect OK:
BIOS Version 0805
EC Version MBEC-Z390-0122
LED EC1 Version AUMA0-E6K5-0106
LED EC2 Version AULA2-SO72-0101
ME FW Version 12.0.6.1120
I can't get any version of Aura however to see the motherboard RGB.
Finds my EVGA GFX, my G.Skill Memory and my Corsair AIO, but not their own motherboard. Pretty hilarious actually.