Uninstall crate using Asus uninstall tool. Enter advanced bios-tweakers paradise-change SPD/TRUE TO SPD/FALSE.
Save and exit to restart.
Install fresh Asus Crate. Aura Sync and if not found, search under device for Gen2 headers on all available.
I'm running on no sleep at the moment so I apologize for the lack of detailed response. I will update tomorrow.
I hope this helps