So your ROG front base was working and showing the clock speed numbers before the outage?
Did you also recently upgrade to Windows 10?
From what I know these are the minimum requirements:
Front Base Driver:V1.01.17
FW: V48 (included in driver)
Note 1: Must install both driver and ROG Connect Plus to ensure all functions work properly.
Note 2: Support models: ROG Maximus VIII series (Intel Z170), Maximus VII series (Intel Z97) motherboards, Maximus VI series (Intel Z87), Rampage V Extreme, Rampage IV Black Edition, CrossBlade Ranger motherboards
Since it was working so I assume you meet all the above requirements. If you verified you have V48 or later firmware and have at least driver version V1.01.17 or later installed then you may need to send the unit back for RMA.