Same issue in 2023, only the link below isn't available anymore.
Maximus VIII Formula isn't compatable with the new AuraSync
Anyone know where I can find the old Aura that worked with this?
You can get Aura for the ROG Maximus VIII Formula at the ASUS Support Center.
In the link below....
Select your operating system, scroll down to Software and Utility, just below that click "show all" in red, scroll down to the first Asus Lighting Control, this will be the latest download.
Should work great for you.