Welcome to the ROG forum.
Have you tried updating your ROG Spatha with Armoury Crate?
Double check the cable to the dock is fully connected, it should click into place. Try the wireless dongle in another motherboard usb port.
If this doesn't help...
Could you try a system restore to a point when your ROG Spatha was working properly?
Here is a screenshot of Armoury Crate and the ROG Spatha X.
Click the picture to make it bigger.
Your ROG Spatha should have come with two usb cables, try connecting the other cable to the dock. This will tell us if it's a faulty cable.
If it's not the cable, trying it on another pc with the same results could confirm a faulty mouse.